Hey there!
A few days ago I faced a weird glitch. Cars that are add-ons are disappearing from garage. I mean, I bring any added-on car to the garage, I save my game and then I quit the game. I launch it again, load my save and there is no car in the garage. I tried it in Michael's place or Trevor's it doesn't matter.

I haven't done any changes or mods to the game recently. The glitch just came out of nowhere a few days ago. Standard cars are saved in the garage just fine.

Any advice, guys?