i'm doing this for years and i know what to do. it's not more than replacing the police, police2 etc. files. a lot of other replaced police cars i have used before didn't have that issue. no replaced ambulances, firetrucks etc. have this issues. but now, for any reasons, this cars which were also working perfectly a few months ago are creating this issue. it appeared BEFORE the new update and i'm still on the old version of gta. so that's why i have no clue.
edit: there are no extra carcols, vehiclesmeta files or something else. only the usual 3 yft, ytd files