It wasn't a bug, the map froze up. All chunks are explored. Sorry

20200511220722_1.jpg I was cleaning up a lot of biter nests with artillery. I fired some shells to explore the map and some did't explore chunks. My game is some times very laggy, I had an ups of +-15. I also use google drive to backup my save files. I could upload the save file but here is a link ...

Flowrate would be really usefull to use in the circuitnet, certainly for nuclear power control.
Also it is kind of stupid that you can read the flowrate of the pump by hovering with the mouse but not use it to control stuff.

Here is the save

One set of inserters can not reach the cargo wagon after some turns
-train is stopped in a station
-only a creative chest mod loaded