hopper bug, makes game unplayable

[gothzilla]

This is sandbox with all default settings. With this maze the hoppers that come in the top exit straight out the right side making them impossible to kill. The ones that come in the left do not try and go out the bottom though.

[finnw]

Is your maze cross-shaped?

I've seen this too, in a cross-shaped maze that forces the creeps to pass through the "wrong" exit (not the one they are heading for.)  If they pass through that exit (or one hop away from it) they will jump through it.

Here's a maze that will reliably trigger the bug:


However if the maze does not take them within one hop of the exit they will not head towards it.  They will head for their own exit as normal.

So this maze is safe for hoppers:


because they will follow the edge of the cross, and they cannot jump from there to the exit in a single hop (it's 3 cells away and they can only jump 2.)