The same thing happened in one of my games too. It happened when a player imported one of their characters. I basically spam clicked to delete the red boxes. It still had the error, but less obvious. I'm having the exact same problem with version 11.5 of the shaped sheet. That's right. Version 11.5, and I use a custom version of the sheet that can't be updated until I decide it should be. When trying to create a new character, multiple class and level lines are showing up, and they can't be removed. If I manage to remove a line, it instantaneously re-appears. It also screws up the class and level line on the sheet. For example, a fighter at level 1 is showing 0, 2 Fighter 1. I went to a custom version of the sheet to prevent issues, but somehow problems are happening anyway, possibly due to using the shaped sheet companion as well.