Blue Post
Original thread hosted on Blizzard's official forums.
Floors in Housing -- Reverting to Default Appearance
View on Blizzard forums:
https://us.forums.blizzard.com/en/wow/t/floors-in-housing-reverting-to-default-appearance/2295494/320
Confirming that the fix for this went out about two hours ago, and it was in a client update, so after you exit the game (if you were in-game) and update your client to the latest build, you should no longer have non-default flooring leave from where you put it.