So... It has been a while.
I played today for like 10min and the issues seem to be fixed after installing the update 3.6.37.7694.
I can't edit my main post anymore so make sure to tag it as solved or whatever and close this thread.
On a side note:
You must realize that fixing stuff that you broke when messing with the game code is *always* of most importance, the majority of players will never find it was worth to wait for the fix when the delay was due to a cosmetics pack release. Of course some irrelevant players will love vanity shit being added, but most of us are disposed to put some money on your work in exchange of solid updates that won't break the gameplay and actual new content instead of new not-so-creative faces and hairs that will be hidden by our helmets most if not all of the time, I know we can hide the helmet but they just look better any day.
So next time you f-up, which considering the past couple updates, is pretty much granted, make sure to give your player base a little more respect by fixing what really matters as soon as possible and not delaying it for some dumb reason.
