The disappearing cars from the garages was only one part of the issue. Rockstar keeps saying they're fixing disappearing car/mods issues but it seems they are addressing the garage issue only. There are tons of other situations where cars totally disappear. Examples:
When my garage is full and I want to get a car out to put a new one in, I go in get a car come out and that one that was sitting there is gone...or if that doesn't happen.....I put the new car in and the one I took out is gone.
Cars disappear when entering houses for missions cutscenes or entering buildings during missions.
If there are a lot of cars on the screen, I've gotten out of my car and turned then turned back and my car was gone.
Don't run too far from your car or the same thing will happen.
When this happens Ive checked the impound and the cars are not going there.
These have been running issues with GTA since the beginning and I hope with each new iteration they get it fixed, hasn't happened yet. It however seems extra bad in this one.....
Please fix or at least minimize all the other disappearing car issues aside from the garages because there is a bigger problem out there for sure.
I don't drive any of my garage cars because Im afraid they will only eventually disappear on me.