Minor bug with NSSavePanel during export

There is a minor interface bug with the NSSavePanel during export. As you can see in Screenshot A, the NSSavePanel slides down from the toolbar, but then flickers and shifts down. Technically this should be anchored to the bottom of the toolbar as seen in Screenshot B.

Screenshot A:

Screenshot B:

Mac OS X 10.10.5
Glyphs 2.1.1 ( 791 )

The panel is placed by the system. I couldn’t figure out why it missplaces it.