Ok I know what happened, it's because of how the camera is implemented, I had to cut corners when implementing the camera to make it doable during the timeframe of the jam... It works quite well for most effects, but not those that can be placed on a specific cell, like teleportation, the camera movement prevents you to place it too close from your character ...
I'll try to improve it for the post jam patch that we'll release right at the end of the jam, so stay tuned ! And thanks a lot for your kind words !