One of the requests in #5104 was to possibly add a button to make exiting full screen more obvious to the user. Rather than adding a button to the full screen view, we discussed that we should just change the icon of the full screen button to make it align more with other examples in industry.

Based on what I was able to find from font awesome and some investigation of other products that have full screen modes, these are the two alternatives I think we can upgrade the full screen icon to.

Arrows

Open Boxes