This issue has been happening to me about 3-4 times a week. Restarting MAC helps sometimes but seriously? I paid over $700 uo front annually, how much do I need to pay to not have to constantly restart. This has cost me hours of lost productivity, I lost one client because I was unable to meet deadline and I have been up all night working on another deadline, and guess what--hand tool stuck. Nothing else works. I've customer service and they can always fix it for you. It takes about 4-5 calls with different level agents and 1-3 hours of your life that you will never get back. They never tell you how to prevent it, how they fixed it or how I can fix it. Interestingly, I NEVER use the hand tool, ever. But it appears and locks up my functionality several times a week. I've used Photoshop for over a decade. and never really had any problems. This year, the hand tool issue, has costs me time, money and credibility.
[Branched from unrelated thread about the Type tool. Subject renamed.]