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Firefox and thunderbird: invisible dropdown menus / missing overlay planes
Hi all, due to the occurring problem I cannot select topic to describe best my type of question: Description of fault: Using Open Suse Leap current version 15.3 (KDE) w… (xem thêm)
Hi all, due to the occurring problem I cannot select topic to describe best my type of question:
Description of fault: Using Open Suse Leap current version 15.3 (KDE) with all patches installed (zypper dup: no action required) In either thunderbird and firefox application (but e.g. not in dolphin or k3b or gimp...) I have following problem: When pressing any entry in File ... View... bar I do not get a visible dropdown menu to chose from Firefox specific: When I try to use a bookmark folder in the bookmark bar there is no visible dropdown menu to chose from When I try to chose from a dropdown menu inside the content of a web site i will get no visible feedback at all.
BUT: when I want to chose a bookmark that should appear in a dropdown list and I move the mouse to that remembered position I see in the lower left corner the bookmark's address and I can chose it! The same happens with the dropdown menus from the the File.... View... Help line. I am able to chose a command once I remember where to point to.
So I guess all what is missing is the overlay plane where the menu contents reside.
This problem occurs in 95% of the time I use both applications, BUT there are 5% of the time where everything works like a charm. I have no idea what i do differently in that usage. Whenever Firefox works normal, also thunderbird does. Is it somehow a KDE releated problem?
How can I fix that problem? Any hints?