Factorio Forums

Reproducer steps:

0. Have construction robots researched and available

1. Build an offshore pump

2. Landfill it in to make it into a Water Well Pump

3. Destroy the Water Well Pump by damage (eg: shoot it, biter attacks it), leaving the ghost in its place

Robots can replace the destroyed ghost and get water flowing again, but players can not. That seems inconsistent, and I believe the bug is that a robot can replace a destroyed pump at all. I feel like the intention is that a destroyed water well pump is gone forever.

A variant of the above:

1. Place offshore pump ghosts. Do not let robots build them. Yet.

2. Landfill in the ghosts. The ghosts will remain, but no water is under them any more.

3. Enable the construction robots/roboport

Expected behaviour: robots can't build anything, either getting stuck somehow or the ghosts would be destroyed by the landfill perhaps?

Actual results: robots can build water well pumps successfully from no water.

Thanks for the report. We discussed the issue internally and decided that we will keep it as is. We don't want to punish players if their base designs rely on landfilled offshore pumps and the pumps get accidentally destroyed.