I've noticed for a while now that on rare occasions, a small portion of fight text will get stuck on a square. No matter how many times you walk across the square, it stays put. (It eventually goes away, but usually not till I've quit playing for the day. The next day I'll come back to the spot and it'll be back to normal.) Usually only 2-4 attacks worth of text sticks. I first noticed it around the pond in the poultry farm, but I've noticed it several other places since then. Most recently, I noticed it on Kilican Isle.
I did a search and didn't find this, but I'm no great shakes as a searcher, so my apologies if it's been reported before.