After playing osu!mania, you may notice that if you play osu! mode again, the score-bar's ki disappeared. I don't know if you are experiencing this as well but it definitely happens to me. Tested on other skins as well.
1. Open osu!
2. Play > select mode > osu!mania > play a map
3. select mode > osu! > play a map
4. Notice that the score-bar's ki is gone.
Screenshot:
1. Open osu!
2. Play > select mode > osu!mania > play a map
3. select mode > osu! > play a map
4. Notice that the score-bar's ki is gone.
Screenshot: