In the picture below you can see a triangle of lines that got skipped when engraving. I believe this is a software issue because if it was a hardware issue, the lines would not have starts and ends forming little triangles of alternating on/off engrave pattern.
This is certainly not the first time I have seen this and have typically just scraped or colored in the skipped lines, but it is beginning to annoy me. It ALWAYS forms a triangle, and the triangle ALWAYS forms on a flat side of the art (never on a curve). I would guess this is a strange bug in the engrave pattern dithering in GFUI
Note: I am using JPEG files embedded in SVG files to preserve scaling.