Items put into stash disappearing

Just recently returned to POE after 6 months off. Created a new heist character and got to about level 20 yesterday before logging off.
When I logged on today, all of the items I'd put into the stash have gone. There was currency and a few random items.

After playing for a bit again today I noticed that anything I put into my stash will disappear after switching instances a couple of times.

I don't have a guild stash tab and not part of a guild. So it's not like someone else is taking stuff out of my stash.

What's the deal????

Also, the unique stash tab doesn't allow me to place uniques into it.

And map stash tab doesn't allow me to place maps into it either

Just logged on again and everything in the stash is gone and the sort order of the tabs/colours/names have all been reset to default.

Would greatly appreciate it if I could get a response as this is getting to be a bit silly. Paid for stash tabs that are buggy and not working.

Did you set up any Stash Tab Affinities?

Also, you should *definitely* make a video of this.

I mean a single continuous video. Start recording while playing the game. Put some stuff in your stash. Show the bit where maps and uniques won't go in to your stash. Take whatever steps are necessary to make things disappear (whether that is changing instances or closing and reopening the game). Show the stuff that you put in your stash not being there anymore.

Recording videos is super easy on PS4. You can just do the above sequence, then hit the Share button and choose "Video". It will automatically record the last 15 minutes (this default length may be changeable in settings, I don't know). You can then trim the video with the built-in editing tools.