https://bugs.winehq.org/show_bug.cgi?id=45814
--- Comment #6 from Maciej Stanczew maciej.stanczew+b@gmail.com --- It still does for me -- in fact it happened just now.
I think it's related to the number of games installed. More games installed -> more updates to check -> higher probability for product.db to get corrupted. In one of my systems I have 5 games installed and in the other I have 2, and I feel the first one gets broken quite more often.