it seems it has to do with the server/client desync - the server thinks I am at a different location. Often it is the last part of complex geometry/wall touched. You can check this if you drop an item, for example a food can to the ground, and it disappears from the inventory but does not appear in the vicinity. Backtrack the path you took, to the last place you interacted with the server, and there it is. If you do this, you then can go back to the item you could not pickup and pick it up. It's weird.

Hi kuraudo,
do you mean that items placed e.g. on top of wardrobes cannot be picked up? If the items are "far" from the character, it would be an issue which we are aware of.
If this is however an issue even with items you are e.g. standing on top off, the problem would be elsewhere.
Please let me know.
Thanks,
Andy

Every time it has been items on the floor or tables.

It seems that if I can split the item (see attached files) I will be able to pick all of the items uo, without moving. Also attached picture of glasses that I couldn't pick up.

Edit: Ignore of the files, it was for another bug repport.

Hey everyone,
we have found some issues with this and are currently working on a fix - please be patient.
Regards,
Andy

Since 0.53 it also happens in military barracks, with items under the bed. If it spawns near the doorway, the item is not appearing on vicinity area (inventory) even if i manage to get close to them.

It's been almost a year since this was reported, 7 since the last update.
In 0.58 exp. and 0.57 stable this is very much still an issue. In 0.58 exp it is so bad that i think this is a blocking issue for stable.
I was looting in Berezino for 20 minutes and half of the dozen+ items i found could not be picked up. All of them on the floor. Clothing, food items, paper and a cooking pot.

mighty, often doors are out of sync (shown open and you can walk through, but they are not), which results in the player being outside a room for the server, which then blocks the player from picking up any item in that room.
simple solution: open/open+close+open the doors and walk in and out again

as desync issues are beeing adressed (getting better and worse again from time to time), we should just be patient

Thanks, I will try that though I find it strange that the items would show up in the "vincinity" area of the player in this case.
Nonetheless I think this too much of an important issue to still "only" have the acknowledged status almost a year after reporting - especially if not related to the door desync. How much good does perfect loot distribution do, when half of the items cannot be picked up. It seems strange to me.

Many times you can drag the items into your hands and THEN place them into your inventory. Sometimes that works and sometimes not. It's easy to confuse this bug with the bug where you pick up an item but it remains visible on the ground or table afterwards, even to other players.