Some of my games show up in my Lutris library multiple times when I open it (except only the first one is real, the others are just empty listings). MultiMC, for example, has one functioning entry but sometimes when I open Lutris there are 5+ MutliMC ‘buttons’, the same for OpenCity. It only seems to happen, that I recall, with games that are installed on my computer but not through steam or something like that.
I removed the fake entries of MultiMC in this screenshot but OpenCity is duplicated as well.
Oh, by ‘empty’ I mean if I click them, they won’t actually launch the game at all, just the first entry every time does.