Scenario: Two groups of Mine stations each consisting of two stations per group, the two groups are 13 parsecs apart. Group A has one station with Intermediate completed, and needing upgrading to intermediate on the other. Group B needs intermediate upgrade on both. A miner set on auto is working on the first group station needing a Intermediate upgrade.
On turn end (and also the completion of station upgrade) the miner auto shifted to the second station on the first group that did not need an upgrade, and stayed there on top of the mining station. (as an aside you cant see any indication of the mining station under it in the same way as you would when a ship sits on the same spot as a resource being mined).
On the next turn, the miner did not move off the station, stayed there. It needed a manual move next turn. All in all it delayed mining by 3 turns, and needed manual intervention to sort out.
Expectation was when it finished the last intermediate station in the first group it would auto move to the needed upgrades in the second group 13 parsecs away, that didnt happen. Its consistent, tried it on several similar situations.
Regards
Zy