Very wrong pathing bumping into the map edge

[elexis]

In this svn r23333 replay (at ​Phab:F1197592), some of my units were taking absurd detours, see screenshot.

They received an order to gather at the metal mine.

The incident repeated itself at least thrice.

For example these commands led to the behavior:

turn 1279 500
cmd 1 {"type":"returnresource","entities":[14495,14496,14497,14498,14499,14500,14501,14502,14503,14504,14505,14506,14550,14551,14552,14553,14554,14555],"target":14602,"queued":false}

turn 1280 500
cmd 1 {"type":"gather","entities":[14495,14496,14497,14498,14499,14500,14501,14502,14503,14504,14505,14506,14550,14551,14552,14553,14554,14555],"target":12827,"queued":true}

12827 is that metal mine.

[elexis]

Judging by one of the screenshots, it has something to do with "domain edges", see that teal box around the mine on the last screen.