I know you said the malfunctioning of the trampoline is on purpose. Probably you were thinking about bringing some challenge to the player, idk.
From a design perspective I don't think it was the best: the player gets frustrated and don't understand why it is not working. Had you implemented something like 2 different trampolines, with different malfunctioning levels and the worst being better to control the bounce, for example, the player could choose to use a more risky-trampoline or a safer but with worse control.
This was just a suggestion to make the game even better; Now as it is, it is quite fun to mess around throwing bunnies and bouncing them hehe
Good job!