--- a/src/eric7/UI/UserInterface.py	Fri Apr 26 14:29:19 2024 +0200
+++ b/src/eric7/UI/UserInterface.py	Fri Apr 26 15:20:23 2024 +0200
@@ -8489,7 +8489,10 @@
         @type QShowEvent
         """
         if self.__startup:
-            if Preferences.getGeometry("MainMaximized"):
+            if (
+                Preferences.getGeometry("MainMaximized")
+                and not DesktopUtilities.isWaylandSession()
+            ):
                 self.setWindowState(Qt.WindowState.WindowMaximized)
             self.__startup = False