Thanks for reporting this issue and your help with troubleshooting. We appreciate your patience and willingness to work with us.
Here's our official document and workaround for this issue:
http://helpx.adobe.com/photoshop/kb/p...
Menus, shortcuts, Lasso tool, and/or Photoshop stop working when using a Wacom tablet | Mac OS
When you use Photoshop with a Wacom tablet, one or more of the following may occur:
• menus, panels, or dialog boxes turn white and become unresponsive
• keyboard shortc...