For some time I have been observing that in the Google Stadia application in general there are games that I have bought but they do not appear marked as such. If I get into the game if it appears and I do not understand the reason.
I proceed to put several examples:
You're not alone, others have come across it as well. More of an annoyance but one that could be addressed by the Stadia team.
If you're able to leave a feedback through the Stadia app, please do so.
Yeah different bundles/editions aren't tied together right now. What you're seeing isn't unique to your account, it's just that the different editions are considered separate products. I agree that ideally there should be some filtering to cut out products that essentially include other already owned products.