Wrong clef when changing from tab to standard staff on guitar part

Windows 7, GIT commit: d65c722

There are two manifestations of this.

A. Changing staff type in Create Instrument

1) create new score from scratch
2) add instrument Acoustic Guitar [Tablature]
3) click the entry for the staff
4) add linked staff
5) in the entry for the linked staff, change staff type to Standard

Result: clef is Treble clef 15ma (should be Treble clef 8vb)

B. Changing staff type in Staff Properties

1) create new score from scratch
2) add instrument Acoustic Guitar [Tablature}
3) Finish
4) Right click staff
5) Staff Properties
6) Change Type to Standard
7) OK

Result: clef is Treble clef (should be Treble clef 8vb)

Not sure where the code to change staff type change gets its clef info. For that matter, I wonder where it gets the string info when changing from standard to tablature - that much seems to work.