i don’t have the ability to report bugs so i’m posting this here but. if someone could move this to bug reports or something that’d be nice 
in my baseball game i made a customization system using a bunch of random hats i found and set the TextureId to 0. if players joined mid-game after the hat was already cloned into workspace, players would find themselves turning grey or taking on the appearance of other NPC’s/Players in the workspace. however when i set all the TextureId’s to be a blank string instead of “0” it fixes everything.
tl;dr TextureId = “0” makes clients that have to render them if the object spawned before the client was able to join have issues rendering everything attached to said texture.