If you are having this issue, it seems that I have run across the issue.
It seems the Projectors are causing this issue, so from the Main Menu Settings, (not ingame as it wont update until the next map load) Turn off Projectors and you should have your floors back.
ISSUES:
Seems that now, instead the flashlight will create a weird dark shade all around the floors, and might cause the light to become like the missing texture look when pointed down sometimes.
It seems the Projectors are causing this issue, so from the Main Menu Settings, (not ingame as it wont update until the next map load) Turn off Projectors and you should have your floors back.
ISSUES:
Seems that now, instead the flashlight will create a weird dark shade all around the floors, and might cause the light to become like the missing texture look when pointed down sometimes.