Can't debug Grails in 14.1

Since upgrading to 14.1.2, I can't debug my Grails application anymore. I'm using IntelliJ ultimate edition, JDK7, and Grails 2.1.0. I can run it just fine (Run -> Run -> Grails:myapplication) but when I try to debug (Run->Debug->Grails:myapplication) clicking Grails:myapplication doesn't do anything.