Sometimes when I go to edit a page in Confluence I don't get any edit toolbar. This can happen in different combinations too, sometimes I get the edit bar but not the table bar, and sometimes vice-versa.I can't repeat this, and it seems to occur at random.
It does seem like clearing the cache clears the problem. But and hour later it reappeared. So it seems like the cache will need to be cleared repeatedly. I've tested in Edge a few times and haven't seen it. So that may be a better option for the moment, although my testing hasn't been extensive enough to guarantee anything.