Guys you REALLY need to do something about this asap. I don't know if it's a mac/pc problem or if it's a CS6 problem. I have been working with photoshop on PC for the past 9 years or so. I recently had to switch to CS6 on Mac.
I can no longer place my cursor in the blend modes field and use arrow keys to quickly toggle through them to find the ideal mode. I used to be able to preview 15 blend modes in just 5-6 seconds and land on the ideal mode... and get on with my project. NOW i have to click this button and click again on each blend mode... lengthening my process by up to 2 minutes. This is an ENORMOUS problem for me as choosing blend modes is critical in my day to day design work.
See the menu right next to it where you can type in the opacity? I can put my cursor in there and use arrow keys to adjust values. Blend mode NEEDS to work this way too. And this is on a mac. You simply HAVE to do something here. productivity impacted severely.
Also.. this problem exists in After Effects CS5 on pc. Let's get it fixed there too. I will hand-write you a letter of praise and send flowers if you can do this.