Confirmed [Indev 0.52.1] Invisible opponents

[PersuerNL]

Very rarely, your opponent will be invisible. I can only confirm this with wild pokemon though. Also, the gloom on the picture down here, was found in the Safari Zone.

What I expected to happen:
To see a wild pokemon

What actually happened:
The pokemon was invisible.

 

[Fanta]

Happened to me in trainer battles and battle frontier too.
no way to repro tho.