Space Bar
OK--I am on Mavericks 10.9.1 with my iMac; lots of memory, lots of storage. This space bar behavior just started. I did restart, then restarted from my backup clone. Same result. So I deleted the Mail client and restored it by reinstalling Mavericks.
The space bar still goes to the next message in line. The issue came to light when I was trying to fill a form that had been emailed to me. I clicked on the "response" window and could type letters but as soon as I needed a space--Bang--out of the form and into the next message.
The space bar works normally for other applications, such as Word, Excel, and even the Thunderbird mail client. I have looked into the Keyboard Settings screen but there does not seem to be anything there that could be triggered by just the space bar.
Am I doomed to using Thunderbird?