When I click  a genre using songtree, the grouping is by album but the tracks are not sorted.

I have to click on the column that contains the cover art, then click on the track column, and then back to click on the cover art column to get the (standard) sorting by track.
Maybe there's something wrong on my setup? I'd assume in songTree it makes sense to have things sorted by track...

Currently the grouping and the sorting of the SongTree are independent.
But changing the sort order of the songtree is much easily done by using the right-click menu on the column headers (the same menu allows changing the grouping and adding/removing columns).