I second the sights on gun bug and the item dropping bug.
A bit more info for the sights on our guns though. If you have a 6x atog set on red dot, then pull out your long ranged weapon with a hunting scope or built in scope or even if that second gun has another 6x atog set on the atog sight instead of the red dot, when switching back to the other gun it will set it to the atog as well. Same happens vice versa. If you have your atog set on your gun, then swap to a hunting rifle with no scope or a weapon with just a red dot, swapping back to the weapon with an atog that you left on the atog sight, it will be set on the red dot sight instead. It seems the game wants to keep the range of sight you use saved instead of individually saving the last range of sight used on a specific gun. This also happens to mosins and sks quite often. You'll constantly need to swap to the PU sighting again if you've used a gun right before it without a long range scope. So in conclusion I'm only assuming it has to do with zoom levels also interfering with it.

Thanks Geez! Good to know.