An overhaul of the air filtering mod by Schorty. Includes complex air filtering steps to remove pollution.
Mods introducing new content into the game.
Map generation and terrain modification.
When mousing over an air filter and seeing the highlighted chunk it's filtering from, if I then hit escape, save the game, exit, and load back into that save, the chunk that was highlighted is now permanently highlighted.
Using better-air-filtering version 0.3.5
Should be fixed in latest version. Thanks for noticing and reporting! https://mods.factorio.com/mod/better-air-filtering/changelog