If you think you've found a bug in Photoshop CS6, please post your findings here on the forums.
Here is a list of the information we'll want for you to gather at a minimum:
Here are some more detailed instructions for writing a useful, complete bug report for us on the forums:
On occasion, the Photoshop engineers may request that you provide problematic files in order to reproduce and debug your issue.
In these cases, please post the file somewhere using your own servers or one your favorite online document/distribution services and provide a URL/instructions to download the file:
If the file isn't something you can post publically, you can request that someone from the engineering team contact you to figure out a secure way to get the affected files.
The Photoshop Development Team