This seems to be related to T146463.

I've had this happen every time I've played on 1.06 Experimental in Chernarus. I've not been able to reproduce it consistently. Sometimes I haven't been able to pick up objects without dragging them into my hands first. A few moments later on the same server, the problem disappears. I've had it happen with items spawning directly on the ground, with items spawning inside clothing etc.

Here's a video of how I couldn't pick up the steaks or bones by pressing F after skinning a hen. Dragging the steaks directly to my backpack didn't work either. I had to drag each item to my hand and then into my backpack:

In T146647#1984602, @Geez wrote:

Hello Brother_Hao.
Do you experience this issue when taking items from dead bodies or also when looting in the world? And could you try to record a video for us?
Regards,
Geez

I experienced the issue with dead bodies and world items. Can't record a video since I lack a stable connection atm