When you have a broken leg and are on the ground because of it (not by going prone, but by falling down when trying to walk because of a broken leg), if you try to equip a weapon (i only tried with the fnx) the character will automatically put it away.
- Legacy ID
Break your leg, then equip a weapon
Don't go onto the ground by going prone "z". You will be able to equip your gun then, you have to be on the ground because of your broken leg.
I noticed this with pistols only. If I am prone and attempt to equip a pistol (I tried the FNX and the Magnum), the character will pull it out and then put it away. However, pulling out any other weapons works as intended.
Mitigation: Pull out a pistol in crouched or standing position before going prone to have a pistol equipped in prone position.