Not only on Linux, I’m on windows 11 and I’m not able to click buttons, drag windows and do most of the operations (and I’m in the preview build, not in the source build)
I hope this gets addressed before the stable release because I can’t find anything about this!
(It’s happening only on some projects, e.g. the NDisplay template)
Edit: The Windows issue was completely unrelated to the Linux one, i found a temporary solution here: Unreal 5.7 Ui not working? - #3 by ILunin