Attach sources not working in 12.1.4

Hi,

I am currently using IntelliJ 12.1.4 on Mac OS X 10.8.4

I want to browse and debug the code with a library that has sources-jar in the local maven repository.

I have tried

• clicking the download sources in the Maven tab
• clicking Download sources in the top of the editor tab
• clicking Attach sources... and navigating to the source jar in the local Maven repo
• added the source jar in Project Structure -> Library

Nothing helps. Still not able to see the source code. Is this a newly introduced bug?

Best regards /Lasse