I carry a Mosin, an FNX45 and a Splitting Axe. When i have the axe equipped and try to change to my Mosin from the action bar, my character will put the axe away and then get the Mosin out, and then put it straight back in his bag leaving me unarmed so i then have to press the button to get my Mosin out again (this also happens switching Mosin > axe too) but not when i switch from axe/Mosin to me FNX45.
Very annoying when dealing with zombies if i dont want to draw attention to myself by shooting it with the Mosin.