I've noticed a bug by just normally playing the game. The H25 Gravil-H series Van has a unbelievably weak rear driveshaft and the van veers to the right freshly spawned due to the suspension in the rear being so messed up. This is just something that I noticed when I spawned in the H-Series. Maybe others could tell me if theirs do it too? Thanks!
Just to be sure, if you have any mods, have you first checked with those disabled? It's possible the issue caused by, a now outdated, mod.