The thumbnail on the purchase prompt does not update when PromptGamePassPurchase was used. If no previous purchase was prompted, it’s blank; If I previously prompted a product purchase, it still shows the thumbnail of that product.
“Premium hoverboard” is a gamepass on my game, this is the result for prompting to purchase it after prompting for another dev product, “5 points”, as it can be seen in the thumbnail.
Reproduce: Use MarketplaceService:PromptGamePassPurchase before and after prompting for a developer product purchase to view the different scenarios.