Inventory Bug?

somtime when i explore my inventory opens by itself and somtimes it looks like this.


is this a bug or a easter egg? anyone know?

 

@Moderator So this thread can be moved ^_^

 

it LOOKS like an easter egg

 

"looks"

 

i still think it looks like an easter egg

 

i use sortex

 

I know i saw this before I think it is from a certain container

 

I was flying in the air, no container/chest or anyting else near me. and it suddnly opend by itself, i did not open it. never seen this befor.

 

I cannot see why this would be a bug so I suppose that this is indeed an easter egg