Windows 10, 2018.26450, projector output not updating

I’m having what appears to be a bug with Kantan mapper on projectors in performance mode.

While in performance mode, I have a button in the UI that opens the properties window of Kantan. I then use that to open up the normal Kantan edit window

When doing this, the Kantan window updates like normal, but the output on the projectors does not update while dragging shapes around in Kantan.

However, with the properties window open, if I jump out of performance mode to edit mode, and then jump back in to performance mode again, everything updates correctly.

Has anyone come across this before? Or had a situation where the projector output would not update?

What are the specs of your system? Do you have an optimus laptop?

I would also give the GPU drivers a check, see if they are up to date.