Some dvorak shortcuts aren't working. 10.8.2
I'll repost here my answer from SO to the same problem:

It turns out this is a problem in Java that has existed for some years, and is still present in Java 9. See the bug report here: https://bugs.openjdk.java.net/browse/JDK-8022079

JetBrains has been aware of the problem for some years, but is waiting for Oracle to fix it. See these JetBrains bug reports: https://youtrack.jetbrains.com/issue/IDEABKL-6493 and https://youtrack.jetbrains.com/issue/IDEA-63779

In those reports you'll find a work-around using a free tool called Karabiner. I have just verified that it works for IntelliJ. It will probably also work for other Java-based tools.

The work-around is:


Download and install Karabiner from https://pqrs.org/osx/karabiner/
In the OSX System Preferences, set your keyboard to the default "U.S. International" PC. If you don't often type diacritics and other international characters, it's easier to just set the keyboard to "U.S" instead.
In the Karabiner settings, type "dvorak" in the search box, then scroll down to the section For U.S. Input Source and check Ùse Dvorak Keyboard Layout (QWERTY to Dvorak)`