Short description:
There is grass covering the barracks (while the cleaners normally do a fine job). This happens when you place your barracks over certain grassy spots on the map. Also it is not only the barracks that is affected by this issue.
Screenshot:
There are a lot of screenshots in the original thread, just took one from there.
Possible cause:
Not relevant
Prevention:
Place you barracks somewhere else.
Workaround:
Not relevant
Related:
- Graphics glitch: Road disappears beneath dirt/mud
- Graphics glitch: Walls disappear after they are build
Original thread(s): 1