I have been using dorico over the last year and a bit. Just recently I have been encountering a strange issue where my alt-click functions to not work. I have tried to reset the keyboard shortcuts and checked my keyboard is functioning correctly to no avail.
I am unable to change the octave of my notes, and also seem to be unable to change barlines on individual staves. However, I am able to alt-click to quickly paste dynamics and ornaments/playing techniques to different notes.
I am using version 18.104.22.1682 on Windows 10 1909.