EDitor Window/Dropdown Menus and notification and tooltips not working on COSMIC

[SupportiveEntity]

Hey there @Hamzo1999! Welcome to the community! There’s a known issue with some Linux windows managers and the recent updates. The change to SDL3 has been causing some issues, and there’s a couple workarounds in this thread. Hope this helps!

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Hi, thank you! This topic helps a lot. I’m using Kubuntu 25.10 (KDE) As stated in the Updating Unreal Engine on Linux to SDL3 | Unreal Engine 5.7 Documentation | Epic Developer Community SDL3 does not work well with Wayland yet. While Wayland support is compiled into the SDL3 library, Unreal Editor using pure Wayland is unusable. Mouse click events are not correctly received (though touch events are) and in general there are a number of issues. X11Wayland support is fine and Editor works a…