1. Create a new score
2. Enter notes in a measure and add some dynamic(s) a hairpin.
3. Highlight measure
4. Press "Delete" on your keyboard.
Result: All content in the measure is deleted, except for the hairpin.
Hairpins should delete when deleting all the contents of a measure.
Comments
This is as intended. There was considerable back and forth discussion during the beta period of how various lines should behave with regard to deletion of notes, and quite some effort was made to get things working the way the consensus expected. Not that it is impossible to revisit this, but it would be worth discussing (again) in the forum.