When I use the default Compatibility View Settings, internet sites are in Document Mode 7 by default.
The culprit appears to be the "Display intranet sites in Compatibility View" setting. When I uncheck this, internet sites display appropriately instead of in the legacy document mode.
The odd things is that I'm not on an intranet nor are the sites I visit intranet sites. They're normal internet sites. Why does "Display intranet sites in Compatibility View" impact normal internet sites? Is this a bug?
Developer Tools - Emulation
The developer tools emulation page, for a normal internet site, says that we're in Document mode 7 by default because of intranet compatibility settings. But we're on an internet site? What's up with that?
Default Compatibility View Settings
Turning on/off the "Display intranet sites in Compatibility View" setting impacts normal internet sites. What gives?
The workaround, of course, is simply to uncheck the "Display intranet sites in Compatibility View" setting. What I'm looking for here is an explanation of why we need to do this for internet sites.