I’m not getting the intermittent issue you’re having. Everything works fine with my RA1, and both RA1/2 work correctly on LaserBox. But my RA2 with Lightburn always rotates in the wrong direction every time, without exception. So toggling the mirroring option doesn’t change anything. I either make sure the image is mirrored in preview, or I turn my RA2 180° so it rotates in the ‘proper’ direction (so JohnJohn’s reply above does work for me).
It’s not a show stopper, but it is a hassle.