Weird graphics glitch - see-through terrain?

[Scottbert]

So initially, the game looks fine. Any time I go to a leader screen, though...

It's like the game takes a screenshot of what I was looking at, and then it's displayed 'under' parts of the terrain (dark areas of land that have been previously seen but are not currently visible)

Here, you can see that I was looking at the explorer before:

Spoiler :

And here, I zoomed out and scrolled over an unmapped area before triggering the bug, so now you can see the zoomed-out grid under the terrain:

Spoiler :

I can't find anyone else with this problem. Any idea what's causing this or how to fix it?
I don't remember when it started. Maybe shortly after Rising Tide came out? Or before... it didn't do it when I first played it, but it does now.

 

[Scottbert]

Eventually, I decided to poke around in .ini files besides GraphicsSettings. In config.ini, I found this:

; Whether or not to use screen space terrain overlays
Use Screen Space Overlay = 1

I changed it to 0, and now it seems to be working.

Leaving this here in case anyone else has the same issue!