Hm. I'd send it in, and include a save file, if you can.
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^ That's about as close a category as we can get. I would follow the steps to clear the cache first and launch the game to test it, but if it doesn't populate the stash correctly after that, ticket time.
Oh -- and also be sure it's not something like accidental filters being applied.
That should have been one of the the first things I asked, but I only thought of it now. So here is where the idea will stay.