Deleting bar contents in one staff causes all staves to lose dynamic marking

Open the attached score.
Select one whole bar, e.g. the Alto Sax 1 bar.
Press Delete.
The contents of the bar is deleted, but all other bars lose their dynamic marking too.
I would expect that the other bars remain unaffected by the delete operation.

Mac OS X Mavericks
Nightly build 24a6b12