While working on a web site , in the Property Pages of the project, select Build Page in Start Action. After several runs, debugs, etc, Studio silently switches itself to Build Web Site. Since in our case its a site, that have hundreds of pages and code, it takes up to 10-15 minutes for it to build it, which is different problem.
Visual Studio/Team Foundation Server/.NET Framework Tooling Version
Steps to reproduce
Operating System Language