You can see the problem I'm having from this gif - having notes next to a task can cause the task hierarchy to break (making a task go from I.XXVIII to I). It doesn't only happen when a note is overlapping a task, that's just a reliable way to replicate the bug.
(Please ignore the absurdity of my to-do list, I have an art project where I draw all the Hades (game) characters eating a huge burger.)