In Android Studio 3.0.1 Project window I select Android then expand Gradle Scripts
Normally the top of the list shows build.gradle(Project:XXXX).
It does not appear, but choosing Project window Project Files confirms it's existance.
I have laboriously compared this project's home directory to that of a 'good' project but nothing stood out.
The project was created from a recently forked repo via
File > New > Project from Version Control > GitHub
The project builds correctly, honoring my changes to the project build.gradle.
This question may have been asked elsewhere but remains unanswered, so I am re-asking it with additional information!
Any insights or new avenues to explore would be appreciated.
Update I have removed Versioning for this project and the problem persists. Have removed GitHub tag for this question.