Units on retreat mode freeze if HQ is inaccessible

[aco4]

Describe the bug
Some maps place the Command Center (HQ) in an inaccessible location. For example: surrounded by cliffs/water. Units set to "Retreat at Medium Damage" will stop moving when they try to retreat, since they can't reach the HQ. This is only resolved when the player builds a repair facility or repair unit.

To Reproduce
Steps to reproduce the behavior:

1. Play this map on Advanced Base
2. Make units
3. Set them to retreat at medium damage
4. Move around until the enemy shoots your army
5. See error

Expected behavior
The retreating units should get as close as possible to the HQ

Your System:

• OS: Windows 11
• Game version: 4.5.5

[Monsterovich]

Hmm. We could make some sort of global retreat point besides HQ.