[2.2.14 pre2] New OpenGL hole in DSZ2

2.2.14:

2.2.13:

Found another case on CEZ2:

Note that there are two here: one where's a triangle is cut out, but another where the texture is skewed on the right.

Curious on what might be causing it. :/

mentioned in merge request !2533 (merged)

mentioned in commit a4bf68bb

closed with merge request !2533 (merged)