Guitar fingering on unison notes in on a single stem (common in guitar literature) seems unstable. The attachment shows a copy/paste three times of the last movement of the José sonata: all were pasted with the correct visual fingering (the first example in the image below), but have ended up with different dispositions of open/fingered strings around the stem. Possibly because the order of rendering of the unison noteheads is random?
In the original score, I’d entered the fingering with string assignments correctly in Engrave, then flipped to Print, which reordered the fingerings/noteheads.
Guitar-Fingering-Example.zip (474 KB)