Issue
I'm getting an issue where non-src folders are looking like packages, they look completely fine in my natural folder directory.
The assets folder should be a hierarchy, but isn't.
Thought it was because I was in package explorer but not project explorer, same issue with project explorer.
Solution
I believe, you right click on your project and choose "Build Path" and "Use as source folder". If it is the case, you can revert the problem by right clicking on your project and selecting "Build Path" and then "Remove from build path".
Answered By - sbegaudeau
Answer Checked By - Marilyn (JavaFixing Volunteer)