498.45 KB, image/jpeg
525.39 KB, image/jpeg
User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:16.0) Gecko/16.0 Firefox/16.0 Build ID: 20120710030551 Steps to reproduce: Make browser full screen, for example, by clicking on a full screen icon on a photo in Facebook. Actual results: 1) The browser goes full screen. 2) The browser overlays the page with a huge message saying that it's now full screen, and offering a way to block the behavior. 3) I know it's full screen. I just told it to go full screen. The message is not helpful, interferes with page viewing, and is annoying. Expected results: No message. If I tell the browser to go full screen, it should do so without telling me that it did so.
Michael: A screenshot of what you are seeing would help - also on facebook I cannot seem to locate a photo that has a full screen icon.
You can get the icon on any photo, I think. Here are two screenshots, one with the icon clearly marked, and the other with the result. Note that Facebook sometimes gives only certain people certain features, so if it doesn't work on your account, try someone else's.
Created attachment 641283 [details] Click on this icon to get Facebook in full screen and get the notice on top Click on this icon to get Facebook in full screen and get the notice on top
Created attachment 641284 [details] The notice on top is what tells you that Firefox is now in full screen.
Hi Michael. Looks like this issue hasn't been addressed for quite a while. Sorry about that! The current full screen notice allows you to check a box to always allow full screen for that domain. So the annoying notice only has to appear for your once for Facebook. You can turn off this feature with about:config and the full-screen-api.approval-required option; see this support page: https://support.mozilla.org/en-US/questions/937742