My Colony v0.48.0 - Web client (Chrome 62.0.3202.62 on Windows)
In an offline human game:
1. Select a regolith miner or gold miner that is currently harvesting regolith/gold
2. Click Build
3. Place a mine somewhere sensible
The scaffolding for the mine is laid down, but the builder does not visit the mine and start building. I have to click the builder again, click Move, and move them next to the mine. This usually works, but sometimes I have to click directly on the mine while moving them (even though that cell is red).
Building regular buildings with the rover or builder works fine, this only happens with mines.
I've been able to double click and select all builder bots and without pressing move I can click on a square of a mine to be built and they will go. That's what I usually do, I never usually will have to type "m" or click the move button, i just click them, then the unbuilt mine and they go.