I'm not sure about other browsers, but using Chrome on Linux version Version 28.0.1500.71 I see the text of tabs being selected when I click on them (see attached screenshot).
Here's how I have fixed it with CSS:
Here's how I have fixed it with CSS:
li[role|="tab"] { -moz-user-select: -moz-none; -khtml-user-select: none; -webkit-user-select: none; user-select: none;}