I just noticed a curious bug. I opened a scrivening with lots of comments (enough to fill the column on the right), and they were moving up and down a little, with the scrollbar appearing and disappearing.
Those are the two states. With the dis- and reappearance of the scroll bar, the comments move up and down a little. I had only one Scrivening open in the editor. I changed scrivenings, widened the program window so all comments would fit on the screen, and then switched back to that 1B scrivening - no more blinking! Seems to me this only happens if comments don’t fit on the screen.
Noteworthy: My PC got slower and slower, almost like the RAM was progressively filled, and the blinking got slower the longer I waited (and the fuller the RAM got) with that “buggy” scrivening open. PC and program both sped up as soon as I switched to another scrivening.