I know this has been reported before and honestly, it’s not a bug.
But what it is, is a damned fool mistake.
The sandstorm has been there since the early days.
The sunken city as an addition much later on.
Now why on Earth would someone place the sunken city …
on the side of the map …
directly in the path …
of the sand storm?
Seriously: You really need to move the location of the sunken city.
That was a really dumb thing to do.