SUMMARY I use the Global Menu applet and am seeing problems with LyX (version 2.3.6.1), which is a document processing program that uses Qt for its UI. Upon launching LyX, the menu works fine. However, after working in LyX for a while, the menu stops working, submenus cease to appear. STEPS TO REPRODUCE 1. Start LyX. 2. Work in LyX for a while, opening/closing menus and so on. OBSERVED RESULT After a while, menus stop opening: the top-level menu item in the manu bar is highlighted, but no submenu opens. EXPECTED RESULT Submenus should open every time. SOFTWARE/OS VERSIONS Operating System: openSUSE Tumbleweed 20211027 KDE Plasma Version: 5.23.1 KDE Frameworks Version: 5.87.0 Qt Version: 5.15.2 Kernel Version: 5.14.14-1-default (64-bit) Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-8550U CPU @ 1.80GHz Memory: 15.5 GiB of RAM Graphics Processor: Mesa Intel® UHD Graphics 620 LyX version 2.3.6.1 from the OpenSUSE repositories. ADDITIONAL INFORMATION I've reported this on the LyX bugtracker: https://lyx.org/trac/ticket/12415 The developer there says that LyX is generating the menus on the fly when you enter the top-level menu, it's their way of adjusting the changing menu contents. The developer uses global menus with Unity and says it took them a while to get right back at the time (4-5 years ago). It may be an issue between the way KDE displays the menu and the way LyX generates them, but for me it's a bit hard to track down. There were some issues with this with KDE in the past (#399975); this issue is different because it only appears after a while.
Is there a way to get debug information from KDE for the global menu? The problem persists and the LyX devs are asking for it (https://www.lyx.org/trac/ticket/12415#comment:4).
Sorry we were not able to get to this yet. Are you still able to reproduce the issue in Plasma 6.1.4 or later?
(In reply to Nate Graham from comment #2) > Sorry we were not able to get to this yet. Are you still able to reproduce > the issue in Plasma 6.1.4 or later? I saw this bug also in the past. Now with 6.1.4 on wayland I see that the dynamic menus take more time to form with a global menu than without, but apart from that, it works as expected for me.
OK great!