bug - "in collection" not showing when i sort games by alphabetical. They show when i sort by popular or highest to lowest, though

Title says it all. When i sort through atari 2600 games for example, only a few of the items show as "in collection" when the games are sorted alphabetically. When I change to highest to lowest, or popular, then all of the icons show accurately if they are in my collection.

I have a larger collection than average i think, which may be a factor.

Thanks for everything you do, you are awesome!