Not sure if this is worth anyone’s attention, but just noticed that with unconsolidated rests, I am able to use alt-right arrow, Shift-alt-right arrow, etc to shift and move things as expected. With Multi-bar rests showing, however, this functionality is lost.
What specifically are you trying to edit that you find can’t be edited when multi-bar rests are shown?
Well, for some reason, it is working now. I was trying to shift the music and rests by using alt-arrow, and this was not working correctly with Multi-bar rests enabled (only worked with them turned off). But, now it seems to be working fine. Sorry for the false alarm. Feel free to delete the post.