This is a pretty consistent and easy to reproduce issue. I have pretty normal staff rooms, 4 or 5 of them in this save file. Every now and again I look and there's a dozen staff of all types stuck on the table. If I click on them and right click to move them, it is resolved but they're pissed because their whole break was spent in limbo. This has been around for a while. All you have to do is leave the game running as normal and they'll get stuck. This makes playing with staff needs quite difficult.
In a similar vain, I have to have tons of toilets in each staff room because there seems to be a cooldown on how often a toilet can be used. Even with a free toilet, staff who need to go simply won't because someone has used it in the last hour.
In a similar vain, I have to have tons of toilets in each staff room because there seems to be a cooldown on how often a toilet can be used. Even with a free toilet, staff who need to go simply won't because someone has used it in the last hour.