Hi, on Harmony 14 and now also in Harmony 20 the issue described here is still there:
https://forums.toonboom.com/harmony/general-discussion/pose-copier-no-pixmap
if you try to use pose copied and there’re 2 library panels open it won’t work.
th eworkaround is close one of the 2 library, but it would be nice it this issue can be solved in future.
thanks
Luca