**As it stands, Gleba's resource values don't get affected at all by the Rail World preset. This will likely need to be changed, for this, as well. (As it stands currently, Non-Nauvis Resources don't get affected by presets that modify Nauvis' Resource settings. I intend to make another suggestion ...

https://forums.factorio.com/116391


I swear I tried to search for bugs mentioning these but it didn't come up with any. Thanks for finding that for me.

Looks like they don't intend to fix it, but maybe they'll change their mind as part of the 2.1 stuff, as it seems to be focused around ...

Probably more of an oversight than an exact bug, technically (unless this used to work and doesn't now).

What did you do?
Started to create a new Single Player Freeplay (Space Age) world, and selected the "Rail world" Map Generator preset option. I then also selected the "Rich resources", "Ribbon ...

TL;DR
Achievements shouldn't be disabled when using the official map generation presets, such as Rail World or Ribbon World, as long as they aren't modified, even if they would normally break the rules for certain achievements.
Alternatively (and preferably), modify these presets and the rules for ...