Amusing thread in the Chromium forums asking for feedback about the decision to remove the “+” sign from the new tab UI in Chromium/Chrome. Most users seem very angry about such a change.
I’ll admit that like many in the forums, I thought it was a bug at first as well. Because without the “+”, it just looks like a UI artifact and not an actual button.
Also funny/interesting: the thought that Google removed it because it would confuse users with regard to Google+.