Hi,
the reason for this is still the Android Flashplayer itself - it still doesn't support Multi-Touch events with more than 1 finger,
krpano itself can't change that,
theoretically it should be possible to catch the the zoom-gesture by Javascript and send it via the Javascript-Flash interface to krpano, but then the gesture would only work in windowed-mode and not in fullscreen-mode - that can be confusing and problematic - so I'm not sure at the moment, if it would make sense to implement that...
best regards,
Klaus