BUG? Randomly missing lines

Getting intermittently missing lines on this file. Only difference between the two is adjusted speed on the text layer. Can provide the file if required.

Both the main app and the preview show the lines being output. LB V1.1.04 on Win10, HP laptop

Are both of these imaged the same direction, X and/or Y? Are each of these done with the imaging the same direction relative to the grain?

Looking at it one is rotated 90 deg to the grain but the missing section on the bow goes in both directions so all of it shouldn’t be affected by the grain surely? Also if the grain were somehow eating the laser output (if that’s what you’re getting at), should it not appear elsewhere instead of regularly around the bow and the bottom left line on the scroll which I just noticed.?

Both outputs had the same rotation in LB.