When moving the crystal to another slot there were three ways the 2 slots were connect. However only one way was connected with open doors. The crystal did not take the open path but instead tried to go through a closed door that would only open if the crystal reached the new slot (which it of course couldn't). The only way to fix this was to bring back the crystal to the original slot and open another door the opened a more direct pathway.

Steps to reproduce:

Create a way to a new slot and have a more direct route to it closed off by not opening a door.

The Crystal will try to move to the new slot using the direct (closed) route.

The Crystal gets stuck.

Expected Behaviour:

Create a way to a new slot and have a more direct route to it closed off by not opening a door.

The Crystal takes the open route to the next slot.