[2.0.41] Biter stuck near roboport, possibly due to large build

[tinker9]

What did you do?
I built out my base into areas that biters were regularly walking through, using a blueprint or copy/paste containing roboports, radars, and electricity poles.

What happened?
Most of the biters attacked the buildings being built by the bots. One of the biters just didn't do anything, even though it was in range.

What did you expect to happen instead? It might be obvious to you, but do it anyway!
The biter attacks the roboport or radar near it.

Does it happen always, once, or sometimes?
Occasionally, but it's hard to tell exactly why.

Save game: https://www.sendspace.com/file/4i7q3x

[Rseding91]

Do you have a save file from before the biters attacked that I could use to reproduce one getting into this stuck state?

[tinker9]

Possibly?

I think the first save is the original one in the bug report, and the second is from 3 days before:
https://www.sendspace.com/file/1049cq

https://www.sendspace.com/file/71zqur

If it helps, I'm sometimes running the game with my player in it, and sometimes in a server with no players (because the GUI freezes when I switch users on macOS).

[Rseding91]

Where can I go in that save file to watch the biter get stuck?

Biter related issues are almost impossible to diagnose after-the-fact. Which means, I need to see a moving biter get stuck somewhere.