Hi all, I recently did an erase/upgrade to Mavericks. I'm finding that every time I go full screen with a video using Chrome or Safari, it transitions to a second Desktop space. I seem to recall this happening in 10.8 but it either stopped or I managed to disable it. Some searching tells me this has something to do with the YouTube HTML5 trial. After leaving the trial, the first video I clicked on fixed the issue (full screen happened immediately without the transition to a new desktop), but the second video didn't work. All videos on Vimeo do this too. It's kind of annoying and I want it to stop. Any nerds to the rescue would be greatly appreciated!