Dorico 4.3.30, Mac OS
Steps to reproduce:
- create a new project
- add a new solo player
- Add some bars of music
- In one bar, add an Ossia staff and fill it with something
- Go to Layout Options > Hide Ossia (I only tried it in Score Layouts)
⇒ Ossia disappears
- Got Layout Options > Make Ossia show again
⇒ Ossia doesn’t reapper until one switches away from the layout and back again.
I think that’s a minor issue, but irritating especially for beginners.