Problem with AI features in masks

Hi!

I've got a little problem with AI features in masks, that began on this Sunday. It's obvious that we have to update AI masks after sync settings on pictures, but on Sunday it started to removing AI selected items by a few minutes after edit, so when I go to the next photos, deweloped them (for example many many of them) and I would like to export the group of pictures, the AI select is turned off (there is nothing selected) and I need to update it on every single picture 🤯. Please, I need your help! I have no idea what's going on 🥺 

Did I do some wrong combination of buttoms on keyboard, what would result in this behavior of Lr?

Thank you for help,

Iwona 🥰