If you have a window layout that you'd prefer to the one Visual Studio is giving you, you need to be proactive or, as in my case, you might some day lose it. It's easy to set your default layout: ...

Workarounds available Uninstalling the problematic KB4598301 and KB4598299 Windows 10 updates or using context menu commands to drag VS windows around the screen are viable workarounds.

Visual Studio Live Share, which is now installed by default in Visual Studio 2019, helps developers collaborate in real time, including desktop app sharing, source control diffs, and code commenting.