I was about to engrave some text and when I looked at the preview, some of the lines had shifted sideways between the characters. It engraved the same way (on some scrap material!). I tried converting the text to curves; it didn’t change. Then I reversed that change (so it was text again), reduced the font size a tiny bit and it went away.
I’d tell you which version of Lightburn I’m on but for the life of me I can’t see it! I’m one or two behind though as I have been a bit chicken to upgrade after the Mac weirdness a month or two ago. I acknowledge this may have been fixed already, but thought I’d point it out.