I add screenshot feature to our app, to make our screenshot widget floating above other fullscreen app, we add NSWindowStyleMaskNonactivatingPanel to this widget. but after that, when current active app is not our app, the edit in screenshot widget can't invoke Chinese IME, including system IME. I'm not sure that it occurs in all mac, i find it in my macs with macOS12 and 13. i'm not sure it's bug or feature of macOS. i upload a demo and i hope it can help you. thanks a lot!