When in keyboard mode, it's not possible to expand the length of a clip by pressing shift + <>. I consider this as a bug.
This is a great feature idea.
I don't think this would be considered a bug, as that shortcut specifically only works in track view.
With that being said I would love to have a way of extending the track in keyboard view (or even not looping at all, and just automatically extending - maybe this is coming with the looper update?). I often find that if I'm using keyboard view then I want a very long track to jam on, and then I cut out my favourite parts to use a their own tracks.
Yeah, sounds like a decent feature improvement, but I wouldn't call it a bug.
v3 adresses http://forums.synthstrom.com/discussion/61/self-extending-length-record-mode#latest, might make this request obsolete.