diff --git a/docs/changelog.md b/docs/changelog.md
index b2e0bc4..e5d96d6 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -11,6 +11,7 @@ SPDX-License-Identifier: CC-BY-4.0
 
 #### Enhancements
 
+- On KDE, the effects are no longer applied to windows which are on all desktops and have no decoration. This is primarily meant to avoid applying the effects to the Alt+Tab switcher.
 - Several translations have been updated. Thanks to all the translators!
 - Instead of an always out-of-date list of sponsors, the main menu of the preferences dialog now contains a link to the new [list of all donors](https://schneegans.github.io/sponsors/). This list is semi-automatically updated whenever a new donation is received. Thanks to all the donors!
 - The possibility to [donate cryptocurrencies](https://schneegans.cb.id) has been added.
diff --git a/kwin/main.js.in b/kwin/main.js.in
index b2cec57..3fff01f 100755
--- a/kwin/main.js.in
+++ b/kwin/main.js.in
@@ -80,6 +80,12 @@ class %EFFECT_CLASS% {
             return window.hasDecoration;
         }
 
+        // This is primarily to avoid animating the AltTab popup.
+        // See https://github.com/Schneegans/Burn-My-Windows/issues/384 for details.
+        if (!window.hasDecoration && window.onAllDesktops) {
+            return false
+        }
+
         if (blacklist.indexOf(window.windowClass) != -1) {
             return false;
         }