I think it´s a bug, but I'm not sure yet...
Whenever a save a code file, in Ruby Mine 5.4, my file goes out of the Changes list.
In other words, it was marked "blue" (the file name color in tabs) as "modified" and when I save it, it goes to "white" again, losing the "modified" state in tabs. But If I refresh my change list, then I becames "blue" again.
It wasn´t happening in RubyMine 5.0.4.
I'm using Git as VCS, and running on Windows 7.