EDIT: On closer inspection, this strange shortening only seems to have applied to the Violin 1 line.
I’ve opened up the project I’m working on and throughout the whole piece (10 minutes or so) note lengths have been altered. It definitely wasn’t like this when I saved it last night. As an example I’ve attached two screenshots of a violin line. The playback sounds very non-legato, and on inspection in Play mode, all the notes are clipped by around 15% from their correct length. (The first, selected note in this section has a blue bar which extends to the correct place, but it is obscuring the shorter orange bar, which represents its new, truncated playback).
I have tried “Reset Playback Overrides” to no avail. Weirdly, I’ve tried pasting in sections from a previous version (which has correct note lengths) and on arrival in the new file, they’re all shortened like the notes they’re replacing.
I don’t think it’s relevant but I applied “Select All, Edit > Voices > Change Voice > Upstem Voice 1” (to correct a MusicXML import problem) to the entire project some hours before closing it yesterday, but had continued working on it, and the note lengths sounded fine when I saved it. I imported the original from Sibelius months ago, and have done many hours of work on it since with no similar issue.
Any suggestions, before I revert to the older saved version?