When stepping through tracked changes in a document and accepting them (and advancing to the next), I find that Word does not always adjust the display by scrolling far enough down the page. It will cut off the line from the bubble or even cut off more than
that.
I have included some screenshots showing where Word naturally positioned when it advanced and then showing what it looked like when I scrolled down a bit further. These shots show a very short window, but I only made the window short to keep from exposing
more of my document. The exact same problem happens when the window is much larger.
I'd suggest that Microsoft add a bit more padding to their positioning algorithm.

