"Here be glitches"
I've never encountered that one, but I don't use the WW much. I have noticed that when I click on a team in one of my leagues -- someone else's team, I mean -- I'll often get an entirely different team pop up in the new window.
Yesterday I had a 7% mop with 26 RL IP throw 51 pitches, and after the game his fatigue level was 8%. Then after resting for a game, it went down to 6%.
(Also, the 7% mop entered the game when we were down 8-2 in the 8th inning. After we tied it up, the dummy stayed in the game, and even though he was tired and injuries are on in this theme he refused to get injured. Even more perversely, he allowed just 1 run in 3 innings and got the W.)