When i want to pick up items, sometimes i cant. There is no lagg, there is no server restarting, and of course i have enought free slots, but my friends also tried, and they also cant picked up.

I tried to picking up these items with:

• double click to the item
• drag item to free slot
• lokking at the item and press F

Probably its like when I changeing clothes i can see on the ground, but i already wear that. But thats interesting if i click to eat by foods, then its possible to picking up them. (just food)