Wayland has caused innumerable calibre problems for a long time. It (and other distro sillyness) reached the point where Kovid (calibre's author) considered dropping Linux calibre support. For all I know he might still be considering it.
I am 99% sure that nothing will be done in calibre to "fix" these problems. There might be changes in Qt, but usually new releases of Qt create more problems than they fix.
I suggest you change window managers if you can.
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