I have had the same thing happen about 3 times on my 1013 R3 (less than 200 miles). I just thought it was me getting used to the the bike. All bikes seem to have their little quirks.
So far I have noticed:
1 Stalling described above (popping the clutch kick starts it)
2 Serious "backing off" when downshifting and using the engine for breaking. (Sounds really cool)
3 Kick stand sometimes catches in pant cuff at stop light. (This kills the engine and makes you look stupid)
4 Clutch seems to engage a little abruptly moving up through the gears (Probably me getting the feel of the bike)
5 THE TORQUE!!!!