Hi there @Milkrobber and welcome to the community! This happens to sound a lot like one aspect of an issue I was experiencing myself only VERY recently. I refer to Item no 2 in this bug report thread I generated.
Now as other members who graciously came forward to tell me, a work around, which worked for myself and them at least was to go into your player inventory and set the sorting option to ‘Not Sorted’. Let us know if this helps.