Metronome ticks do not always match reference beat value
When using non-standard note values for the reference beat in the tempo, the ticking of the metronome--when enabled in the play panel--still reflects the standard reference beat.
When I enter a tempo marking using a eighth note as the reference beat for a common time piece, (e.g. (eighth note) = 120), and then enable the metronome in the playback panel, I would expect the metronome to be ticking at 120 bpm, rather than sixty, which is currently the case.
This currently is doubly confusing with six-eight time. Say a user creates a score using a dotted-quarter reference tempo of 60 bpm. The metronome will beat at sixty bpm, which would be expected. However, the "Tempo" label on the play panel still reads "90 BPM", since it uses the quarter note as its reference.
Now most of the time, having the standard rhythm inform the metronome is a really good thing, but in situations like these, it's probably important to provide some visual indication of the value of the reference beat in the play panel.
I think that this should likely be configurable, so a fix might be to have a drop-down, or pop-out option in the playback panel to choose the reference metronome tick. As long as there was some visual indication of where the metronome would tick, this would do the trick.