Apparently, there is a limit of 500 when it comes to custom covers, this seems absurd to me as someone with a lot of games on multiple platforms. With all the missing/broken covers, any limit seems ridiculous. Not to mention, there is no way to know what number you are at, or if removing covers would restore this shallow pool.

How about Galaxy just reverts to local storage only when that limit is reached so users aren't just screwed?

Reference: https://github.com/FriendsOfGalaxy/galaxy-integration-steam/issues/6#issuecomment-521933818