While the new selector menus are very nice, unfortunately most mods and maps no longer appear on it. Is there any quick fix I can do to make my mods appear in the selector again?
If they aren't appearing then they aren't installed correctly. Mod vehicles work in the new selector just fine
^This. easiest solution is to make a Zip of all the mod folders, they need to be in a 'vehicles' folder in the zip. Works without a problem on my end at least. There may be issues with loading times, but I haven't noticed anything on my end.