This is a slightly more advanced problem than most of the ones I’ve covered so far, but this saved me so much time and aggravation, I wanted to share how I dealt with this problem in detail. On OS X, Spaces and text expansion software don’t really play nicely. If you switch back and forth ...
There are two possibilities, depending on what you’re seeing. This is how the top of your Safari window should look, with the address bar: If it looks like this instead: Then you have accidentally hidden the address bar.
Let’s say your Mac should display a screen like this: But instead it looks a bit more like this: Somehow, the “show negative colors” preference has become activated.
