diff --git a/krunner/main.cpp b/krunner/main.cpp
index a05402a01..f19382cad 100644
--- a/krunner/main.cpp
+++ b/krunner/main.cpp
@@ -34,6 +34,7 @@ int main(int argc, char **argv)
         QCoreApplication::setAttribute(Qt::AA_DisableHighDpiScaling);
     }
 
+    qputenv("QT_WAYLAND_DISABLE_FIXED_POSITIONS", {});
     const bool qpaVariable = qEnvironmentVariableIsSet("QT_QPA_PLATFORM");
     KWorkSpace::detectPlatform(argc, argv);
     QQuickWindow::setDefaultAlphaBuffer(true);
@@ -42,6 +43,7 @@ int main(int argc, char **argv)
         // don't leak the env variable to processes we start
         qunsetenv("QT_QPA_PLATFORM");
     }
+    qunsetenv("QT_WAYLAND_DISABLE_FIXED_POSITIONS");
     KLocalizedString::setApplicationDomain("krunner");
 
     //     TODO: Make it a QGuiApplication once we don't depend on KDELibs4Support
diff --git a/shell/main.cpp b/shell/main.cpp
index 26e4ecede..147483df4 100644
--- a/shell/main.cpp
+++ b/shell/main.cpp
@@ -79,6 +79,7 @@ int main(int argc, char *argv[])
 
     oldCategoryFilter = QLoggingCategory::installFilter(filterConnectionSyntaxWarning);
 
+    qputenv("QT_WAYLAND_DISABLE_FIXED_POSITIONS", {});
     const bool qpaVariable = qEnvironmentVariableIsSet("QT_QPA_PLATFORM");
     KWorkSpace::detectPlatform(argc, argv);
     QApplication app(argc, argv);
@@ -86,6 +87,8 @@ int main(int argc, char *argv[])
         // don't leak the env variable to processes we start
         qunsetenv("QT_QPA_PLATFORM");
     }
+    qunsetenv("QT_WAYLAND_DISABLE_FIXED_POSITIONS");
+
     KLocalizedString::setApplicationDomain("plasmashell");
 
     // The executable's path is added to the library/plugin paths.