Problems using Sikuli in Katalon 8.0.5

I was using Sikuli successfully within Katalon a year or so ago. I later discovered native Katalon features that allowed me to remove the Sikuli functions, so I haven’t tried it for a while.

Today I’ve again come across a need to use Sikuli from within Katalon, but now no Sikuli functions that are dependent on mouse movements will work. This is the error I’m seeing when attempting to click on an image:
" [error] RobotDesktop: checkMousePosition: should be L[407,178]@S(0)
but after move is L[847,65]@S(0)
Possible cause in case you did not touch the mouse while script was running:
Mouse actions are blocked generally or by the frontmost application."

I am using the same hardware/OS environment and Sikuli jar file as before. Has something changed in Katalon that is now blocking the mouse actions?