Why transitions don't work correctly?
Transition below another transition above is not visible.
I just realized that we can't have a transition above our another transition below, because transition below is not working while whole time of transition above is activated.
If you can't understand what I wrote, see this issue explained in the movie here:
I know there is no "a" point (from...). There is only "b" point (to...) of transition. But don't matter. It should has nothing to do with it.
This empty space is intentionally: