Not a good idea imho.
I’m confused. Are you still stuck in maintainance mode on that instance or not? Because earlier in your post you wrote the following:
occ db:add-missing-indices
occ maintenance:repair
occ app:update --all
or
occ upgradefixes this issue
Looks like you’re not the only one experiencing this issue:
https://help.nextcloud.com/t/version-28-0-0-11-safari-issues/176528
I guess someone should file a bug report on GitHub, if no one has already done so.