[double entry] single piano stave with bass clef turns to treble after property edit

Having added a piano stave to a score, and removed the stave 1 (trebble clef) in the Instruments panel, the new (single) stave looks normal, and I put some notes in it.
But after editing some stave properties (short, long or part name) and closing the properties window, the (bass) clef symbol at the start of the stave turns into the treble clef, as is the stave type in the Instruments panel.
The staff clef can be changed back to bass using the Clefs palette, in Instruments windows the clef type remains "Treble".

I use the single-stave layout as tool with my piano lessons, because I want to control left- and right-hand part volume and mute controls separately in Mixer and visibility in Instruments panel, and will have a few versions of each part/stave, sometimes with click, drum, bass and/or voice tracks.

Attached is a simple score with 2 piano staves, the first unchanged, the second manually added in Intruments window, treble staff remvoed, and the staff long name edited.

Using version: 2.2.1 linux 64-bit. I don't remember having this seen in earlier versions.

I already issued a bug report in in tracker.