Uhm that should not happen, can you tell me where exactly? Was it on top of the triangle? meaning the 2 heart symbol? I will try to reproduce it and fix it in the next Version :) Thanks for reporting!
It was indeed on top of the triangle, the one with a flat surface and where you pass the heart symbols, the part that's above the tube entrance.
Usually in good pinball fashion, you'd shake the machine in case it would get stuck or to make it hit a certain spot, i was honestly just missing this ability.
But still a very 'exciting ;)' game nonetheless