No footnote text on mouse hover, LO Writer 6.4.6.2

Upgraded to 6.4.6.2. When I hover the mouse over a footnote number in the main text, there is no popup showing me the text of the footnote. This used to work. I do have tools/options/LibreOffice/General/Extended Tooltips checked.
Running Debian buster, XFCE 4.12

No problem here on LibreOffice 6.4.6.2 (openSUSE Leap 15.2 and KDE/Plasma desktop and using packages from TDF=https://www.libreoffice.org/download/download/). Did you check whether this appears while running in LibreOffice’s Safe Mode (Help -> Restart in Safe Mode) as well?

Safe mode did not solve the problem, nor, of course, a reboot. It sounds like the problem may be distro dependent. But thanks for trying.

It sounds like the problem may be distro dependent.

I’d rather assume that it is dependent to your desktop manager XFCE (Installing a Buster test system right now - will return if I see the same issue).

I tested it on a different computer also running Debian Buster. The problem appears on both XFCE and LXDE. The other computer uses Debian’s video drivers, the first, Nvidia.

Opaque: What did you find?

Thanks.

From my tests: it is a problem when using the gtk3 VCL (See in Help -> About LibreOffice) The problem happens on all combinations of LibreOffice versions and desktop managers (Tested: MATE, LXDE, LXQt, Plasma and Xfce). Even “Plasma”-desktop doesn’t select VCL:kde5 but a mixed VCL:gtk3_kde5 which also does show the problem. I did not succeed running LibreOffice in VCL:kde5 mode, which normally could be forced using SAL_USE_VCLPLUGIN=kde5 libreoffice (forcing GTK3 on my other system also shows the problem) - Hence my conclusion is: This is a general problem of the GTK3 support of LibreOffice (if not of the GTK toolkit issue at all).

Opaque: Thank you for your work. It sounds like you are part of the LibreOffice team. Are you submitting a bug report. It sounds like you could do much more professionally than I. Thanks.

It sounds like you are part of the LibreOffice team

No, I’m just a user of LibreOffice like you.