diff -r 4c520ebe1ad7 -r 2a0735b1eb92 firefox-kde.patch
--- a/firefox-kde.patch	Tue Jan 23 17:32:46 2024 +0100
+++ b/firefox-kde.patch	Thu Feb 22 20:31:18 2024 +0100
@@ -29,7 +29,7 @@
 diff --git a/browser/components/preferences/main.js b/browser/components/preferences/main.js
 --- a/browser/components/preferences/main.js
 +++ b/browser/components/preferences/main.js
-@@ -291,16 +291,23 @@ var gMainPane = {
+@@ -292,16 +292,23 @@ var gMainPane = {
          }, backoffTimes[this._backoffIndex + 1 < backoffTimes.length ? this._backoffIndex++ : backoffTimes.length - 1]);
        };
  
@@ -53,15 +53,15 @@
      let defaultPerformancePref = Preferences.get(
        "browser.preferences.defaultPerformanceSettings.enabled"
      );
-@@ -1744,16 +1751,27 @@ var gMainPane = {
-       this._backoffIndex = 0;
+@@ -1753,16 +1760,27 @@ var gMainPane = {
  
-       let shellSvc = getShellService();
-       if (!shellSvc) {
-         return;
-       }
+       // Disable the set default button, so that the user doesn't try to hit it again
+       // while awaiting on setDefaultBrowser
+       let setDefaultButton = document.getElementById("setDefaultButton");
+       setDefaultButton.disabled = true;
+ 
        try {
-         shellSvc.setDefaultBrowser(false);
+         await shellSvc.setDefaultBrowser(false);
 +        if (kde_session == 1) {
 +          var shellObj = Components.classes["@mozilla.org/file/local;1"]
 +            .createInstance(Components.interfaces.nsILocalFile);
@@ -76,11 +76,11 @@
        } catch (ex) {
          console.error(ex);
          return;
+       } finally {
+         // Make sure to re-enable the default button when we're finished, regardless of the outcome
+         setDefaultButton.disabled = false;
        }
  
-       let isDefault = shellSvc.isDefaultBrowser(false, true);
-       let setDefaultPane = document.getElementById("setDefaultPane");
-       setDefaultPane.classList.toggle("is-default", isDefault);
 diff --git a/browser/components/shell/moz.build b/browser/components/shell/moz.build
 --- a/browser/components/shell/moz.build
 +++ b/browser/components/shell/moz.build