I\'m mostly using Eclipse for Android development these days, and have developed good muscle memory for Ctrl-F11 to run my app. Problem is, if I happen to be editing an XML
Thanks to JesperE's answer I solved it by "Always launch the previously launched application".
Just wanted to add that I didn't have the problem with launching xml until I install "PHP Development Tools".
My conclusion is that in the future I might consider having two separate installs of Eclipse: