I was just trying to fix a "bug" for 2 hours and then found out I only had to "clean" to project..

I was used to get this errors on Titanium Appcelerator and/or Android Studio 4 yrs ago. F*** this shit. Hahaha

sounds like an Eclipse problem.

In our project, when we found a bug, first we do a "ritual", that consist on Eclipse Clean Project then Maven Clean Project, then Maven Install, then Workspace Refresh and finally a redeploy on tomcat... if the bug still alive after that, then we look into the code...

I had this problem a lot of times. Thatt button saved my life so much but still I don't know what it did. Even if in my opinion it's not a normal behavior

I've done this, I feel your pain.

I recently wasted a day on this, too.