Chest in Random Encounter not to be opened?

1. Title: Chest in Random Encounter not to be opened?
2. Reproduction Rate: 100%
3. Blocker? .... not realy
4. Details: There is a chest in random encounters which cannot be opened. This is not my first one I saw in those ones. It is not to be targeted (the cross don't change the color) or to be interacted with.
5. Steps to Reproduce: go to a random encounter and search for it.
6. User Specs: Win10, amd 8-core, geforce 970, 16gb ram.

Here a screenshot of the chest

 

I found the same thing in a different random encounter.

Chest doesn't even have a mouse over tool tip as if it should be intractable. Maybe a placeholder tool tip for the time being?

 

what I remember now: Can you interact when not in combat mode? ... I will also try next time seeing one

 

This.

I've opened the top one of those. You need to get out of combat mode (z)

 

That's weird. There should at least be a mouse over tool tip when in combat, though, shouldn't there?