Yes. I have been holding off on answering, because the old way (being able to rotate text) was so ingrained that this came as a shock, so I wanted to give it a moment to stew. Having sat with it for a moment, I still think text should rotate and stick when a user rotates it. The only potential downside I see to going back to the V5 behavior is if the user want to re-orient an entire detail (say changing the north direction), the text at constant r=0 could be handy. Short of that, I personally don't see any advantage to not being able to rotate text. But I also don't use annotations in anything but layout space, so I might be missing something that someone who does annotation markup in model space might really enjoy.
Also from a user point of view, I think the reason it isn't rotating currently is not very clear or intuitive, so it appears to be a bug. When you rotate a linear dimension, the extension and dimension lines rotate, and the text of the dimension stays aligned, and it is very clear what is happening. But when you rotate text, and then it just jumps back and the control points are the only hint that something happened, it feels much less clear as to what is going on.
Thanks (and sorry, changes in dims can cause me some agita )