According to the log, you definitely have “Black” set as the screensaver, with “Use dim…” not set, and it is definitely going straight to the “Dim” screensaver when paused. I don’t see that the “Black” screensaver ever gets triggered, though.
The only thing I can think of is to try to change the screensaver settings and see if something in the upgrade wasn’t carried over correctly.
First, enable the “Use dim…”, pause a video to see that it is dimming, then stop and change “Use dim…” back to disabled to see if that fixes it.
If that doesn’t work, change the screensaver to something other than either “Black” or “Dim”, save the changes, restart Kodi, then change the screensaver back to “Black”.