pb with category when changed the type of an item

Hello,

I think I find a bug.
I have 2 types of content (T1, T2).
Each type is assigned to his category (T1 -> Cat1, T2 -> Cat2). So authors can't publish an item in the bad category: so to publish a T1 item in the Cat2 is not possible).

But if an author start to write an item with the T1, and later change it to T2, then the item is now in the Cat1 AND in the Cat2, and it's not possible to change it with FLEXI.

In the backend, in the item list vue, you can see the item with a subcategory:


And in the item edition, the subcategory isn't present:


It's for your information.
I do not need support, I've solve my situation directly in the DB.

Thanks for your work.

i think you nned to check acl about multi categorie