diff --git a/containers/libreportal/frontend/core/boot/system-loader.js b/containers/libreportal/frontend/core/boot/system-loader.js
index caf7d14..0866044 100755
--- a/containers/libreportal/frontend/core/boot/system-loader.js
+++ b/containers/libreportal/frontend/core/boot/system-loader.js
@@ -1317,6 +1317,12 @@ class SystemLoader {
       // console.log(`📦 Loading script: ${src}`);
       const script = document.createElement('script');
       script.src = src;
+      // Dynamically-inserted scripts default to async=true and run in whatever
+      // order they finish downloading. Force async=false so a component's
+      // scripts[] execute in array/insertion order — required when a class is
+      // split across files (a base file must run before files that augment its
+      // prototype). Mirrors the ordered kernel ctx.loadScripts() path.
+      script.async = false;
       script.onload = () => {
         // console.log(`✅ Script loaded: ${src}`);
         resolve();