Ok, the problems and other little things I have personally experienced I will list below.
-Chopper missile guidance system isn't working properly with certain settings.
-Chopper gun will not adjust for distance with rangefinder or designator on.(not sure if that is suppose to be there in OA or not)
-ACE backpacks need a little tweaking with the straps because most don't have them like vanilla but a few still do and it looks really bad.(not really but just something that needs attention down the road)
-Some of the new G36s that were added need to have the EOtech sights reworked because the sight is hard to see and it blurry.
thats all I can list off the top of my head but I'll have more tomorrow.