I am getting some weird behavior here. Unproven, but scrolling seems to work only when you have the tray sized to show no more than half the number of icons you have?

I'm having a hard time observing, but it is best when you size it correctly (never show partial icons).

Funny, !vtrayscrollicons prev is doing an odd panning scroll (unlike the !vtrayscrollicons next, which only stops at the end) :b

This is most noticeable when you size vtray to show two icons at once.

Calling !vtrayscrollicons prev using the initial order of icons, it seems to go east, showing last icon alone, stop, then go west reusing the last icon on the right with now the reverse of the initial order to its left, stop, go east, stop, then resume with the neighbors of the initial order when going back west, and stop. It repeats. I'm just as confused as you, and of course, I haven't tried a possible case with more or less than four sweeps (E,W,E,W) as this vaguely describes. :)

*sends e-mail to Vendicator*