Display of Gradle working files?

Just wondering what or why the repeated files with the tan background are at the end of the project display? and can I turn these off? Higher up the tan background seems to represent working folders, the yellowish coloured foreground hints these files are not in the repo. But at the bottom I see another tan section and this appears to be a duplication of all files in the project's root folder. In the image its pretty tidy, but another gradle project I have is full of misc scratch files, notes, readmes, todos, postman scripts etc and the duplication of the folder is noisy and confusing.

Keep clicking on the build.gradle in the tan section, tend to scroll to bottom to find it and this version of the file doesn't seem annotated by the gradle plugin? meaning I have to jiggle about trying to find the correct copy of build.gradle and there's a lot of those.

Ps hit an odd state when my root project was called noise-app and I had a module called noise-app (parent has no code, noise-app is the spring-boot module). Gradle seemed happy to build, but IDEA wasn't happy at all. It disabled all highlighting and editor completion for all code in the noise-app sub-module and the build.gradle in the root folder showed every line with an underlined red error like hint, but no red marks or error message in the gutter.