I upgraded last night from 42.2 to 42.3; aside from some gstreamer plugins which originally came from packman, I had no issues. The system is working for all my normal tasks.
However, moving or resizing windows is EXTREMELY slow. The window (or window edge) lags noticeably behind the cursor - enough so that I find I’ve often moved or resized too far :-(. When I move a window, it also has a partial half-tone block in it that doesn’t seem to match up with any other desktop parts. it I’ve been through the XFCE settings and the process list with no obvious culprits.