It looks this issue have been being reported for a couple of years now and haven't been somehow corrected...
What happens is that whenever Bitdefender performs AV action related to quarantine/clean/delete a file, folder view is reset - i.e. you can't see hidden / protected files and - what's worse - you can't change related settings in options. Even though you enable related settings, systems ignores them. The only solution is a restart when system returns to previously set settings.
Is anyone able to advise how to overcome that issue? Can any developer tell when this annoyance is planned to be fixed?