Roboports automatically pave concrete within their reach.
Mods introducing new content into the game.
Related to roboports and logistic robots.
I have already some zebra concrete on by base, and your mod remove it. Not nice. should only put concrete on free land.
*This is resolved by adding the colored concretes you have installed to the config.
I'm not sure why the config doesn't (or can't?) include mod concretes by default, but that's how it is.