I built an electric miner at the end of a pipeline which caused several overextended error messages to appear, but there is no problem: the miner works perfectly fine.
I thought maybe the error is like at the exit port of the machine and appears despite the machine itself still being able to receive the liquid on the near side, so it's like an off-by-one error where the error appears at the limit of where there would be a problem, but no: adding another miner also still works, it still receives fluid.
Perhaps it's the daisy chaining where you give some leeway, make it work like one big machine/requester? No: I can also put a piece of pipe in between (which will also complain about overextension) and put a miner on the end and it still receives fluid.
Perhaps the error starts appearing before the limit is actually reached? (In which case it should be a suppressable warning; I have gone as far as I want to with this pipeline for now.) No: the maximum of 320 tiles (source) is reached because it says¹ 320 meters (=tiles?) horizontal and 122 meters vertical distance = over 400 tiles total since there are no diagonals. (Edit: I also just noticed the "pipeline extent" property saying 321 out of 320)
I cannot explain the behavior. It seems that either the error appears too soon, or that the distance limit is not being enforced. Considering the extent showing as 321 out of 320, I guess the distance limit is not being enforced
As a separate issue, there is no help information in the tips and tricks about this error, or pipelines in general for that matter, nor anymore info when you click on it (the map simply appears, having error icons plastered all over it but nothing useful). It is not clear what the game wants from you if you haven't read the friday facts -- which I purposefully haven't to get the full exploration experience once it comes out
