[1.1.69] Construction bots not recharging

[Phren]

Hiya,

I was building a new bit of base and put down some rail blueprints; I was confused why it was taking so long, and eventually found the construction bots moving painfully slowly towards the construction site. They were all out of charge, but this was in the middle of my base surrounded by roboports - they were flying past dozens of available roboports. I had time to go over to the offending bots and make a save (linked, seems too big to attach).

The game is modded, but not in a way that should affect this. The logistics bots in the same area didn't seem to suffer the same issue.

Attempts to make it happen again sadly failed, so I'm not sure what was different the first time. I'll update if it happens again.

Cheers!

https://1drv.ms/u/s!Ak2ykWCzqC6vgbAjrYH ... w?e=teJhoe