So we just switched to VS 2012 and it's making me insane because it has decided that whenever I double click a file to open it it closes the other open file I am looking it. At first I thought it was just a resharper thing (using Ctrl + T) but that isn't it, even if I open classA.cs then go click on classB.cs it closes classA.cs - I have never seen or heard of this before and tried several different Google queries with no luck.
Anyway know what is going on?