Found a inventory bug.

[Joseph Works]

If you try to open your inventory when you are switching your weapons, the game will freeze, forcing you to end the process from the task bar. I have tested this several times with multiple characters, and it freezes every single time you do this. This is a major bug and can loose you a lot of progress if you do this after playing for a major amount of time so please make a fix if you can.

 

[Midcal9]

Also happened to me, An Application Handler error. However, I've managed to trigger it only by pressing both buttons simultaneously, even the smallest delay doesn't cause it.