It's me, again :). It seems it's something wrong with AI of workers. First of all, they prioritize fortifying walls over claiming territory (though someone already reported this). Another thing - they become idle when there's lots of work to do - in Lamash's 3rd level I had around 20 workers and 15 were marked in status bar as idle - they didn't claim enemy tiles, didn't fight enemy workers - they were just standing around (example screenshot below). I have encountered such behavior when I did play as Volta but it wasn't happening when I played as Shale (though you may have rolled some hotfix that affected AI of workers after I finished Shale's campaign and before started playing as other underlords).
I have also encountered some pathfinding issues (so far - twice) when I did play Volta's first level. First happened when my eternal got stuck on my bombard surrounded by rampart (there was 1 tile wide passage filled by unprotected bombards), he didn't want to come around it, just tried to go through it. Second happened when my thunderling tried to go through fortified wall (single tile surrounded by my tiles from all sides) instead going around and got stuck. Fortunately, I was able to manually guide them both around obstacle by using rally flags. Sadly, I don't have any save or log for this.
Game version 2.0f9
Windows 7 64bit
AMD Ryzen 3 1200 @3,1GHz
8GB RAM DDR4-2400 (single channel)
Nvidia GeForce GTX 1050 Ti 4GB GDDR5 (MSI GeForce GTX 1050 Ti 4GT OC 4GB GDDR5)
motherboard ASRock AB350 Pro4
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