title: Ctrl + Shift + R is not working in Eclipse
body: <p>We all know that we can use <kbd>Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>R</kbd> to search any file in the workspace.
  But today, I surprisingly found out that it is not working anymore.</p>
  
  <p><kbd>Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>H</kbd> and <kbd>Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>T</kbd> are working though.</p>
  
  <p>I believe I am missing a setting somewhere possibly in Window -> Customise Perspective menu. Not sure what is it exactly.</p>
  
  <p>Any help is appreciated.</p>