The modern wall-building is effectively non-functional. There a whole bunch of issues iwth it, so I'm going to make a list:

1. Often beyond two sections, th elast position becomes red, even though extending it beyond that point makes it blue again. Indeed, once you've placed the two sections you can build and build a new wall section you can place the wall just fine on that square.

2. Beyond two sections, if it doesn't go with the red square issue, all the wall sections except the last don't get built; only the last wall section.

3. Half the time when your stuck with the two wall sections, still only the last section of the wall gets build, the first section remains open requiring you to buy that section separately.

As such, most of the time; you're effectively still stuck with building only one wall-section at a time.

It seems this behavior occurred with every modern-wall building mod I've tried; the original stand-alone one, the version compilated in the Remastered+ mod comp, and the one here in CFE.

I was hoping someone can finally fix this issue.