Check the Visual Studio options:
- Disable “Control click shows definitions in Peek” option in:
Options→Productivity Power Tools→Other Extentions. - Disable “Allow new files to be opened in preview tab” in: Options→Environment→Tabs and Windows.
- Ensure you have F12 key assigned to
Edit.GoToDefinition
perGlobal
scope in: Options→Environment→Keyboard.
UPDATE: It works for Visual Studio 2017 as well.