Naval Pathing Bug: Ships Unable to Move

Noticed this bug while commentating a match.

Naval units will get stuck and be unable to move. Some of them will wiggle back and forth, some won't move.

I can't see anything they're getting stuck on. They aren't getting stuck on each other since there's healthy distance between the two. Maybe they're getting stuck on the shallows?

Here's the game ID if devs want to watch the replay: http://www.pastats.com/chart?gameId=187337

It sallow water. I have noticed this a lot as well. You can see it in your video There is lighter color water which is shallow.

I've seen this also happen to fabbers, my commander and a t1 tank.

Problem is, it isn't clear what is and isn't shallow water. And even when I take a look with pathing view...

The top naval factory would not produce a single unit. The bottom one could produce units, but they could not path anywhere. There is no indication why this is, even in pathing view, where deep water pathing is visible. Something is wrong here.
It would also be nice to have a clearer indication of the shallow/deep water transition.

I agree. I try to mostly avoid naval at the moment because its frustrating and unreliable.