Fleet disappears when order to friendly colony

**Describe the bug**
I have ordered my fleet to one of my colonies so it can resupply. I process the turn and the fleet is gone with no explanation.

**To Reproduce**
Steps to reproduce the behavior:
This is repeatable just hit next turn in attached save game

**Expected behavior**
Fleets don't magically disappear

**Actual behavior**
Fleet should move to colony

**Screenshots**
N/A

**Additional context**
Save files attached