This was two issues in one:
1) lighting needed rebuilding since 5.3, otherwise wrong colors in realtime GI.
2) game view has stretched artifacts, on Mac when using GLCore rendering backend (still happens in 5.3.2).

Original repro steps:
1. Open attached Unity project.
2. Open "Complete > Scenes > CompleteMainScene" scene.
3. Zoom "CompleteLevelArt > Military > Building2" game object.
4. Notice, that surface of this object has graphical artifacts(picture attached).

Additional note:
Doesn't reproduce if glitchy object is exported to another scene or scene is reopened after project strip.

Not reproducible with:
5.2