I wasn't able to place items in some slots in my tent. I tried moving items already in the tent inventory to those locations and was unable to do so. I left the server and restarted my client. When I rejoined I still could not interact with those spots so I took a stack of AK ammo and split it repeatedly. Doing so resulted in skipping those bugged locations.

I am aware that sometimes items are not rendered, but usually taking an item from or dropping an item into a tent result in those spaces revealing their contents. In this case, those spots still rendered nothing.

In the attached screenshot, there are several blank spots in the tent inventory. I took a stack of ammo and split it repeatedly, and it skipped over those empty locations. It seems they are bugged, my best guess would be that the server believes there are items in those locations, while there are not, or they are not being shown.