Hello fing24,
are you sure this is not caused by high latency? What is the average ping of the servers you play on?
Regards,
Andy

Don't think so. I noticed that some times you use something, but the action does not finish thus stopping you doing anything else when you go back to the inventory screen. You can run around and do other things by placing them in your hand. It is not until you find something that says do you want to cancel the action that things go back to normal. E.g drink a can you don't get the drinking action then go to inventory and find you cant do anything. Find another can it says cancel action when you interact with it. So it looks like you have done something, the world acts as normal until you try to do something within the inventory screen and can't do anything. The thing stopping inventory interaction is an unfinished action.

Hi,
is this still an issue? There have been some recent tweaks which might have improved your situation.
Thank you,
Andy

Hello, I can confirm this is happening on 1.05 stable official server, local region, ping is around 40 - 100. Was using a pistol, shots were going thru zombies, doing no damage, ammo was depleted but I was unable to change the mag. I logged out, when logged back in, was like I never shot, UI was showing that I had bullets inside the mag, but the weapon was empty when trying to shoot, also unable to change the mag, thus rendering the item useless.

It seems random but lately was happening quite often, logging out and in seems to fix the situation, but not in the case above.