Pressing Enter in Create Instruments dialog changes genre

Ubuntu Studio 14.04, GIT commit: 5473249

1) create or open score
2) press "I" to open Create Instruments dialog
3) click Woodwinds to expand
4) click Flute
5) press Enter

Result: Woodwinds closes; I'd have expected it to add Flute to score as it does in Create New Score wizard

6) click Woodwinds again to expand

Result: list now shows all instruments instead of Common, although the dropdown still says Common

This has been the case for quite a while. I keep noticing it and thinking I'll submit it later, but then I'm never able to reproduce when I do remember to submit. i believe that's because the bug is only with the Create Instruments dialog not the Create New Score wizard, and I keep not realizing that. Right now, though, it seems completely repeatable for me with Create Instruments.