After updating to 5.1.80.2224, I opened an arrangement I was working on before the update and in the contrabass, I now see this:
I don’t even know how to input simultaneous notes into a single voice.
As far as I can tell, this only appears in these 2 bars.
See attached project:
strange-doubling.dorico (632.3 KB)
Edit: They’re easy enough to delete but I’m curious where they came from.