To Reproduce:

1. Install b11 or b12 of 7u4
2. Made sure java -version reveals the correct build info
3. And the order in the Java Preference is changed so that the top one is the 7u4
4. Launched JConsole from the terminal window

Expected:

Jconsole window pop up with the options to choose the processes.

Actual:

Only partial window is getting shown (see the attachment). This is regression how JConsole works with Apple's default JDK build.

This looks related to the JFrame issue 7145818, but needs further evaluations.