Hi AmomentOfMusic.
Is what you are seeing similar to what happens to the scroll location in an editor (non-composition mode) when , for example, the Inspector is opened and/or closed, resulting in a resizing of the editor window, which causes the text to reflow, and the scroll location to get lost? That’s kind of what it sounds like.
If this is the same behavior, I believe it is a known issue, though I haven’t been able to find the the thread where it was discussed, within the last year or so…