diff --git a/changelog.d/no-crash-on-bad-style.fix b/changelog.d/no-crash-on-bad-style.fix
new file mode 100644
index 000000000..828e94d74
--- /dev/null
+++ b/changelog.d/no-crash-on-bad-style.fix
@@ -0,0 +1 @@
+Do not crash even on css rule insertion failure
diff --git a/src/services/style_setter/style_setter.js b/src/services/style_setter/style_setter.js
index 0ea0341e2..72ac617cf 100644
--- a/src/services/style_setter/style_setter.js
+++ b/src/services/style_setter/style_setter.js
@@ -59,7 +59,13 @@ export const adoptStyleSheets = throttle(() => {
       .sort((a, b) => a.priority - b.priority)
       .map((sheet) => {
         const css = new CSSStyleSheet()
-        sheet.rules.forEach((r) => css.insertRule(r))
+        sheet.rules.forEach((r) => {
+          try {
+            css.insertRule(r)
+          } catch (e) {
+            console.warn('Error inserting rule:', e, r)
+          }
+        })
         return css
       })
   } else {