Closed No pokemon spwan?

[masterling]

While traveling I found this tile (-20,5) .
And There were no pokemon. I first thought somebody killed them. But even though after waiting for sometime(enough for a pokemon to spwan) No pokemon spwaned. Neither did it show the invisible pokemon ("unknown") glich.
The radar shows Regice and a question mark(ig it's Vulpix)

 

[Tanqrnotfound]

Sheesh

 

[razor321]

I got a map glitch in the area
(-2, 1)
or (-2,0)

 

[Mike]

there are a few snow tiles where pokémon don't appear, it's been known about for a while