title: oracle-sqldeveloper mouse mapping issue
body: <p>I found several articles describing the same issue i have, but didn't find a solution.</p>
  
  <p>Since several versions of sqldeveloper(3.1-newest one, 4 i upgraded today) i experience mouse mapping issues. I tried rebooting, reinstalling sqldeveloper, and also after a reinstall of the operating system, nothing changed. JDK 1.7, but also used 1.6 before when experiencing the same problem.</p>
  
  <p>When i want to select something from the menubar/any dropdownmenu, i have to point my mouse several centimeters lower to mark a menuitem. </p>
  
  <p>I have a linux mint system. I would be very thankful for any help.</p>
  
  <p>Thanks
  Nico</p>