Created attachment 152703 [details] bug image SUMMARY *** NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols. See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports *** STEPS TO REPRODUCE 1. 2. 3. OBSERVED RESULT EXPECTED RESULT SOFTWARE/OS VERSIONS Linux/KDE Plasma: neon KDE Plasma Version: 5.26.0 KDE Frameworks Version: 5.98.0 Qt Version: 5.15.6 ADDITIONAL INFORMATION Open the menu icon in the upper right corner has disappeared. Toolbar configure shows "open the menu" but don't work. I removed it and added it again, it didin' t work. I add something else, it happens but "open the menu" doesn't.
That's because you have the menubar visible. When it's visible, the hamburger menu on the toolbar automatically disappears. To make it appear again, hide the menubar.
*** Bug 460294 has been marked as a duplicate of this bug. ***