One catch though is that sometimes Visual Studio will switch the Startup project to whatever project you select in Solution Explorer (work on one of its files).
This seems to "stop" the automatic Startup Project "Feature" from Visual Studio. Click File -> Save All Files to ensure it’s saved, or even restart Visual Studio.
Of course you’ll need to set the multiple startup projects again after that.
P.S. Please help me out by checking this offer, then look below for a small Thank You.
How did I learn that?
As a bonus for coming here, I'm giving away a free newsletter for web developers that you can sign up for from here.
It's not an anything-and-everything link list. It's thoughtfully collected picks of articles and tools, that focus on Angular 2, ASP.NET 5, and other fullstack developer goodies.