diff --git a/src/components/emoji_reactions/emoji_reactions.js b/src/components/emoji_reactions/emoji_reactions.js
index 8a121befc..e1a28a8f1 100644
--- a/src/components/emoji_reactions/emoji_reactions.js
+++ b/src/components/emoji_reactions/emoji_reactions.js
@@ -2,6 +2,8 @@ import StillImage from 'src/components/still-image/still-image.vue'
 import UserAvatar from '../user_avatar/user_avatar.vue'
 import UserListPopover from '../user_list_popover/user_list_popover.vue'
 
+import { useInstanceStore } from 'src/stores/instance.js'
+
 import { library } from '@fortawesome/fontawesome-svg-core'
 import { faCheck, faMinus, faPlus } from '@fortawesome/free-solid-svg-icons'
 
@@ -42,7 +44,7 @@ const EmojiReactions = {
       return !!this.$store.state.users.currentUser
     },
     remoteInteractionLink() {
-      return this.$store.getters.remoteInteractionLink({
+      return useInstanceStore().getRemoteInteractionLink({
         statusId: this.status.id,
       })
     },
diff --git a/src/components/settings_modal/tabs/general_tab.js b/src/components/settings_modal/tabs/general_tab.js
index b0eac97c0..d94191c9d 100644
--- a/src/components/settings_modal/tabs/general_tab.js
+++ b/src/components/settings_modal/tabs/general_tab.js
@@ -48,9 +48,6 @@ const GeneralTab = {
     },
     ...SharedComputedObject(),
     ...mapState(useInstanceCapabilitiesStore, ['blockExpiration']),
-    ...mapState(useSyncConfigStore, {
-      theme3hacks: (store) => store.mergedConfig.theme3hacks,
-    }),
   },
   methods: {
     updateProfile() {
@@ -67,17 +64,8 @@ const GeneralTab = {
           this.$store.commit('setCurrentUser', user)
         })
     },
-    updateFont(key, value) {
-      useLocalConfigStore().set({
-        path: 'theme3hacks',
-        value: {
-          ...this.mergedConfig.theme3hacks,
-          fonts: {
-            ...this.mergedConfig.theme3hacks.fonts,
-            [key]: value,
-          },
-        },
-      })
+    updateFont(path, value) {
+      useLocalConfigStore().set({ path, value })
     },
   },
 }
diff --git a/src/components/settings_modal/tabs/general_tab.vue b/src/components/settings_modal/tabs/general_tab.vue
index a3cb5be07..19800e0dd 100644
--- a/src/components/settings_modal/tabs/general_tab.vue
+++ b/src/components/settings_modal/tabs/general_tab.vue
@@ -64,21 +64,21 @@
         </li>
         <li>
           <FontControl
-            :model-value="theme3hacks.fonts.interface"
+            :model-value="mergedConfig.fontInterface"
             name="ui"
             :label="$t('settings.style.fonts.components_inline.interface')"
             :fallback="{ family: 'sans-serif' }"
             no-inherit="1"
-            @update:model-value="v => updateFont('interface', v)"
+            @update:model-value="v => updateFont('fontInterface', v)"
           />
         </li>
         <li>
           <FontControl
-            :model-value="theme3hacks.fonts.input"
+            :model-value="mergedConfig.fontInput"
             name="input"
             :fallback="{ family: 'inherit' }"
             :label="$t('settings.style.fonts.components_inline.input')"
-            @update:model-value="v => updateFont('input', v)"
+            @update:model-value="v => updateFont('fontInput', v)"
           />
         </li>
         <li>
diff --git a/src/components/settings_modal/tabs/posts_tab.js b/src/components/settings_modal/tabs/posts_tab.js
index 467c2a4da..ab00e52e7 100644
--- a/src/components/settings_modal/tabs/posts_tab.js
+++ b/src/components/settings_modal/tabs/posts_tab.js
@@ -4,9 +4,10 @@ import ChoiceSetting from '../helpers/choice_setting.vue'
 import IntegerSetting from '../helpers/integer_setting.vue'
 import SharedComputedObject from '../helpers/shared_computed_object.js'
 
+import { useLocalConfigStore } from 'src/stores/local_config.js'
 import { useSyncConfigStore } from 'src/stores/sync_config.js'
 
-const GeneralTab = {
+const PostsTab = {
   data() {
     return {
       conversationDisplayOptions: ['tree', 'linear'].map((mode) => ({
@@ -66,19 +67,10 @@ const GeneralTab = {
     ...SharedComputedObject(),
   },
   methods: {
-    updateFont(key, value) {
-      useSyncConfigStore().setSimplePrefAndSave({
-        path: 'theme3hacks',
-        value: {
-          ...this.mergedConfig.theme3hacks,
-          fonts: {
-            ...this.mergedConfig.theme3hacks.fonts,
-            [key]: value,
-          },
-        },
-      })
+    updateFont(path, value) {
+      useLocalConfigStore().set({ path, value })
     },
   },
 }
 
-export default GeneralTab
+export default PostsTab
diff --git a/src/components/settings_modal/tabs/posts_tab.vue b/src/components/settings_modal/tabs/posts_tab.vue
index 444f96392..1e684246d 100644
--- a/src/components/settings_modal/tabs/posts_tab.vue
+++ b/src/components/settings_modal/tabs/posts_tab.vue
@@ -56,22 +56,20 @@
         </li>
         <li>
           <FontControl
-            :model-value="mergedConfig.theme3hacks.fonts.post"
+            :model-value="mergedConfig.fontPosts"
             name="post"
-            :is-local="true"
             :fallback="{ family: 'inherit' }"
             :label="$t('settings.style.fonts.components.post')"
-            @update:model-value="v => updateFont('post', v)"
+            @update:model-value="v => updateFont('fontPosts', v)"
           />
         </li>
         <li>
           <FontControl
-            :model-value="mergedConfig.theme3hacks.fonts.monospace"
-            :is-local="true"
+            :model-value="mergedConfig.fontMonospace"
             name="postCode"
             :fallback="{ family: 'monospace' }"
             :label="$t('settings.style.fonts.components.monospace')"
-            @update:model-value="v => updateFont('monospace', v)"
+            @update:model-value="v => updateFont('fontMonospace', v)"
           />
         </li>
         <li>
diff --git a/src/lib/style.js b/src/lib/style.js
index 50120b37b..343d24aea 100644
--- a/src/lib/style.js
+++ b/src/lib/style.js
@@ -1,3 +1,4 @@
+import { useInterfaceStore } from 'src/stores/interface.js'
 import { useSyncConfigStore } from 'src/stores/sync_config.js'
 
 import { applyStyleConfig } from 'src/services/style_setter/style_setter.js'
@@ -23,6 +24,15 @@ const APPEARANCE_SETTINGS_KEYS = [
   'emojiSize',
   'emojiReactionsScale',
 ]
+
+const HACKS_KEYS = new Set([
+  'fontInterface',
+  'fontPosts',
+  'fontInput',
+  'fontMonospace',
+  'underlay',
+])
+
 const MIXED_KEYS = new Set([
   ...APPEARANCE_SETTINGS_KEYS,
   ...APPEARANCE_SETTINGS_KEYS.map((x) => 'simple.' + x),
@@ -36,6 +46,9 @@ export const piniaStylePlugin = ({ store, options }) => {
         if (MIXED_KEYS.has(path)) {
           after(() => applyStyleConfig(useSyncConfigStore().mergedConfig))
         }
+        if (HACKS_KEYS.has(path)) {
+          after(() => useInterfaceStore().applyTheme({ recompile: true }))
+        }
       }
     })
   }
diff --git a/src/modules/default_config_state.js b/src/modules/default_config_state.js
index 7823777a9..8634752bd 100644
--- a/src/modules/default_config_state.js
+++ b/src/modules/default_config_state.js
@@ -181,6 +181,13 @@ export const defaultConfigLocal = {
   alwaysUseJpeg: false,
   imageCompression: true,
   useStreamingApi: false,
+  underlay: 'none',
+  fontInterface: undefined,
+  fontInput: undefined,
+  fontPosts: undefined,
+  fontMonospace: undefined,
+  themeDebug: false, // debug mode that uses computed backgrounds instead of real ones to debug contrast functions
+  forceThemeRecompilation: false, //  flag that forces recompilation on boot even if cache exists
 }
 export const LOCAL_ONLY_KEYS = new Set(Object.keys(defaultConfigLocal))
 
@@ -212,16 +219,4 @@ export const defaultState = {
   styleCustomData: null,
   palette: null,
   paletteCustomData: null,
-  themeDebug: false, // debug mode that uses computed backgrounds instead of real ones to debug contrast functions
-  forceThemeRecompilation: false, //  flag that forces recompilation on boot even if cache exists
-  theme3hacks: {
-    // Hacks, user overrides that are independent of theme used
-    underlay: 'none',
-    fonts: {
-      interface: undefined,
-      input: undefined,
-      post: undefined,
-      monospace: undefined,
-    },
-  },
 }
diff --git a/src/modules/old_default_config_state.js b/src/modules/old_default_config_state.js
index dc15e1c24..935239d16 100644
--- a/src/modules/old_default_config_state.js
+++ b/src/modules/old_default_config_state.js
@@ -2,7 +2,7 @@
 // used to migrate from old config.
 
 // commented entries are unsynced stuff
-export const defaultConfigSync = {
+export const oldDefaultConfigSync = {
   expertLevel: 0, // used to track which settings to show and hide
   hideISP: false,
   hideInstanceWallpaper: false,
diff --git a/src/modules/users.js b/src/modules/users.js
index e741877a6..d9e42ea76 100644
--- a/src/modules/users.js
+++ b/src/modules/users.js
@@ -702,13 +702,15 @@ const users = {
               user.domainMutes = []
               commit('setCurrentUser', user)
 
-              useSyncConfigStore().initSyncConfig(user).then(() => {
-                useInterfaceStore()
-                  .applyTheme()
-                  .catch((e) => {
-                    console.error('Error setting theme', e)
-                  })
-              })
+              useSyncConfigStore()
+                .initSyncConfig(user)
+                .then(() => {
+                  useInterfaceStore()
+                    .applyTheme()
+                    .catch((e) => {
+                      console.error('Error setting theme', e)
+                    })
+                })
               useUserHighlightStore().initUserHighlight(user)
               commit('addNewUsers', [user])
 
diff --git a/src/stores/interface.js b/src/stores/interface.js
index 5840d6b34..32a8226b4 100644
--- a/src/stores/interface.js
+++ b/src/stores/interface.js
@@ -598,8 +598,9 @@ export const useInterfaceStore = defineStore('interface', {
       this.themeApplied = true
     },
     async applyTheme({ recompile = false } = {}) {
-      const { forceThemeRecompilation, themeDebug, theme3hacks } =
-        useSyncConfigStore().mergedConfig
+      const { mergedConfig } = useSyncConfigStore()
+      const { forceThemeRecompilation, themeDebug } = mergedConfig
+
       this.themeChangeInProgress = true
       // If we're not forced to recompile try using
       // cache (tryLoadCache return true if load successful)
@@ -646,68 +647,41 @@ export const useInterfaceStore = defineStore('interface', {
           convertTheme2To3(normalizeThemeData(this.themeDataUsed))
         const hacks = []
 
-        Object.entries(theme3hacks).forEach(([key, value]) => {
-          switch (key) {
-            case 'fonts': {
-              Object.entries(theme3hacks.fonts).forEach(([fontKey, font]) => {
-                if (!font?.family) return
-                switch (fontKey) {
-                  case 'interface':
-                    hacks.push({
-                      component: 'Root',
-                      directives: {
-                        '--font': 'generic | ' + font.family,
-                      },
-                    })
-                    break
-                  case 'input':
-                    hacks.push({
-                      component: 'Input',
-                      directives: {
-                        '--font': 'generic | ' + font.family,
-                      },
-                    })
-                    break
-                  case 'post':
-                    hacks.push({
-                      component: 'RichContent',
-                      directives: {
-                        '--font': 'generic | ' + font.family,
-                      },
-                    })
-                    break
-                  case 'monospace':
-                    hacks.push({
-                      component: 'Root',
-                      directives: {
-                        '--monoFont': 'generic | ' + font.family,
-                      },
-                    })
-                    break
-                }
-              })
-              break
-            }
-            case 'underlay': {
-              if (value !== 'none') {
-                const newRule = {
-                  component: 'Underlay',
-                  directives: {},
-                }
-                if (value === 'opaque') {
-                  newRule.directives.opacity = 1
-                  newRule.directives.background = '--wallpaper'
-                }
-                if (value === 'transparent') {
-                  newRule.directives.opacity = 0
-                }
-                hacks.push(newRule)
-              }
-              break
-            }
+        const fontMap = {
+          Interface: 'Root',
+          Input: 'Input',
+          Posts: 'Post',
+          Monospace: 'Root',
+        }
+
+        Object.entries(fontMap).forEach(([font, component]) => {
+          const family = mergedConfig[`font${font}`]?.family
+          const variable = font === 'Monospace' ? '--monoFont' : '--font'
+          if (family) {
+            hacks.push({
+              component,
+              directives: {
+                [variable]: `generic | "${family}"`,
+              },
+            })
           }
         })
 
+        if (mergedConfig.underlay !== 'none') {
+          const newRule = {
+            component: 'Underlay',
+            directives: {},
+          }
+          if (mergedConfig.underlay === 'opaque') {
+            newRule.directives.opacity = 1
+            newRule.directives.background = '--wallpaper'
+          }
+          if (mergedConfig.underlay === 'transparent') {
+            newRule.directives.opacity = 0
+          }
+          hacks.push(newRule)
+        }
+
         const rulesetArray = [
           theme2ruleset,
           this.styleDataUsed,
@@ -724,6 +698,7 @@ export const useInterfaceStore = defineStore('interface', {
           themeDebug,
         )
       } catch (e) {
+        console.error(e)
         window.splashError(e)
       }
     },
diff --git a/src/stores/local_config.js b/src/stores/local_config.js
index 73ea1d7d4..096d0b3f1 100644
--- a/src/stores/local_config.js
+++ b/src/stores/local_config.js
@@ -33,9 +33,9 @@ export const useLocalConfigStore = defineStore('local_config', {
       set(this.prefsStorage, path, undefined)
     },
     clearLocalConfig() {
-      const blankState = { ...cloneDeep(defaultState) }
       Object.keys(this).forEach((k) => {
-        this.prefsStorage[k] = blankState[k]
+        this.prefsStorage[k] = undefined
+        this.tempStorage[k] = undefined
       })
     },
   },
diff --git a/src/stores/sync_config.js b/src/stores/sync_config.js
index e9a4a278e..ba4031e9a 100644
--- a/src/stores/sync_config.js
+++ b/src/stores/sync_config.js
@@ -28,7 +28,7 @@ import {
   instanceDefaultConfig,
   LOCAL_ONLY_KEYS,
 } from 'src/modules/default_config_state.js'
-import { defaultConfigSync } from 'src/modules/old_default_config_state.js'
+import { oldDefaultConfigSync } from 'src/modules/old_default_config_state.js'
 
 export const VERSION = 2
 export const NEW_USER_DATE = new Date('2026-03-16') // date of writing this, basically
@@ -628,7 +628,7 @@ export const useSyncConfigStore = defineStore('sync_config', {
       const migratedEntries = new Set(vuexState.config._syncMigration ?? [])
       console.debug(`Already migrated Values: ${[...migratedEntries].join()}`)
 
-      Object.entries(defaultConfigSync).forEach(([key, value]) => {
+      Object.entries(oldDefaultConfigSync).forEach(([key, value]) => {
         const oldValue = vuexState.config[key]
         const defaultValue = value
 
@@ -638,7 +638,30 @@ export const useSyncConfigStore = defineStore('sync_config', {
 
         if (present && !migrated && different) {
           console.debug(`Migrating config ${key}: ${oldValue}`)
-          this.setPreference({ path: `simple.${key}`, oldValue })
+          if (key === 'theme3hacks') {
+            useLocalConfigStore().set({
+              path: 'fontInterface',
+              value: oldValue.fonts.interface,
+            })
+            useLocalConfigStore().set({
+              path: 'fontInput',
+              value: oldValue.fonts.input,
+            })
+            useLocalConfigStore().set({
+              path: 'fontPost',
+              value: oldValue.fonts.post,
+            })
+            useLocalConfigStore().set({
+              path: 'fontMonospace',
+              value: oldValue.fonts.monospace,
+            })
+            useLocalConfigStore().set({
+              path: 'underlay',
+              value: oldValue.underlay,
+            })
+          } else {
+            this.setPreference({ path: `simple.${key}`, value: oldValue })
+          }
           migratedEntries.add(key)
           needUpload = true
         }
@@ -705,8 +728,7 @@ export const useSyncConfigStore = defineStore('sync_config', {
       if (!needPush) return
       this.updateCache({ username: window.vuex.state.users.currentUser.fqn })
       const params = { pleroma_settings_store: { 'pleroma-fe': this.cache } }
-      window.vuex.state.api.backendInteractor
-        .updateProfileJSON({ params })
+      window.vuex.state.api.backendInteractor.updateProfileJSON({ params })
     },
   },
   getters: {