Comment 12 for bug 1785262

This issue is not restricted to arm* but have been seen occasionally on amd64.
It effects the binary package build too, where these tests are part of "make check".

There are a lot tests disabled in 'sw/qa/uitest/writer_dialogs/openDialogs.py' for similar reasons.

So while it locks up at "test_21_.uno:EditGlossary (openDialogs.openDialogs) ... " I would give that a try:
https://git.launchpad.net/~libreoffice/ubuntu/+source/libreoffice/commit/?id=0136e1c7a8f8823cbd0e5027ed203ee0d2f71262