language extensions in 7.0 not working?

fedora 31

installed both standard swiss german dict (from extensions web page, which did not change since 2017) and my own dict as extensions (same as i did under previous versions). this has been always working, also the popup under Tools>Spelling… always showed at least something (like many english languages and german-swiss) in the “text languages” dropdown. in the dropdown is always empty and it does now spellcheck my previous documents (which i did not touch since installing
what am i doing wrong?