Due to several default style changes, there are a few issues with the "anatomy of a figure" example from #7072 when run on v2.x.

• Ticks are not shown on the top and right spines, so one of the annotations is now on top of nothing.
• Ticks are outward and overlapping the labels. I'm not totally sure why that's the case. They shouldn't do that by default.
• Markers have no edge. Combined with the white face, they seem to be invisible.

Most of these should be straightforward to fix when I get a chance if no-one beats me to it.