If someone reads from the creators of the program, then I ask you, make the animator the way it was in version 2. In version 3 hot keys do not work (SPACE=play/stop; DELITE =delite keys). To select a key, you need to click the mouse over it a million times. That's horrible.
Why do we need green and purple lines that limit the playing area? And why are they drawn keys, if they can not be allocated? To indicate the playback area is enough orange line? Why are two extra, it's not clear.