In PC, redstone torches change state when the block they are attached to has a change in signal longer than 1 tick (except for when that change in state is caused by the redstone torch itself, i.e. a short-circuit). In PE however, torches can change state when the block they're attached to has a signal change of 1 tick. The video demonstrates two examples of this in both PE (MCW10) and PC.

https://www.youtube.com/watch?v=8vNeAsOgeyk

To fix: torches should ignore any change in signal to their attachment block that is exactly 1 game tick or shorter (50ms or shorter), and only change state when the change in signal is longer than 1 tick. That way, a pulse that is 1.5 ticks or 2 ticks will affect a the torch, but a pulse that is exactly 1 tick or shorter won't, which is how redstone torches in the PC edition work.

Edit: updated info, since redstone torches in the PC edition ignore any pulse that is 1 game tick or shorter and respond to any pulse longer than 1 tick, not just 1.5 ticks.