Blueprints with waterfill and buildings above them will only place waterfill and no buildings if placed on water. This behavior is different to other situaions where "waiting" is an option (see below).
What to do to reproduce (and see the bigger problem):
First create a blueprint with roboports in a proper distance, electric poles for power supply and landfill underneath.
Or use my blueprint:
Code: Select all
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IswlhNiHMJgqenhc8PS94AlnwBLLgCWTBE8iCO3XBnbrgbC842wvO9nI22z9crLb7zdfDv13dPG7ud9vb/epi9e/N7uFFI7aQn28FSg1LUXl6+h8v4gXR
Do the same on land just for compare.
Take a look.
What happen:
On land the bots will start to build the first roboport and power poles - this extends the reach of your logistic network so the bots wil start to build up the next roboport and so on.
After a while, the complete blueprint setting would be build up.
If yo do the same on water, the bots start with landfill just for the area they can reach. After a while YOU have to place the blueprint again, so the bots will start to build up the building including the roboport.
This will extend your network, causing the bots to extend your landfilled area - but they will stop again, until YOU place the bluprint again ontop the filled landfill.
What I expect and why ("why" first):
If you place blueprints over cliffs, construction bots will wait until blue dynamite will arrive.
If you place blueprints over forest, construction bots will wait until trees are "deconstructed".
If you place blueprints over existing buildings whitch are already marked for deconstruction, construction bots will wait until these buildings are deconstructed.
If you place blueprints with trains and tracks, trains will wait until tracks are build.
So I expect in case of placing a blueprint with buildings on top of landfill, that booth landfill and buildings are set as to be constructed and that construction bots are waiting at place until landfill arrives (like in cases explained above).
If this is considered not a bug, please move it to "feature request" ... but because sequential building works well in other cases I would you please to consider it a bug