I think others have reported variations on this, but it’s my first time. Perhaps because I normally don’t do much in the UI.
Anyway, I have this design, which I copied and pasted in the GFUI to make 6 copies. I then painstakingly rotated and nudged them around in order to fit them onto the material I had available. Just to make sure an alignment problem wouldn’t cause one to go off the edge, I set all the inner parts to Ignore and ran a light score around the outside edges. Yay, it all fit perfectly! So turn the other parts back on, hit print, and wait an hour and a half.
And then I notice that one of them isn’t printing. What’s up with that?
Indeed, after the job finishes I can see it’s greyed out:
What’s going on here?
Turns out the process of rotating causes really glitchy changes in the bounding box around the artwork. Unfortunately, because I had used the GFUI as intended, to arrange things on the bed, my careful alignment was wasted and I had to eyeball the replacement’s position.
Trap for young players, I guess.