2016.2.EAP4 Tab key usage feature in C++ files Follow

In the new EAP4 that I installed today I came across a "funny" behaviour that I'm not sure if it's a "bug" for not. 

After installing EAP4, a new feature is enabled by default: "Use tab for navigation in code". 

In C# files, the tab file now navigates around the code.  In C++ files, it does nothing!!!  It was like the tab key was broken...  Since I'm currently doing a lot of C++ atm, it seemed EAP4 broke my tab key until I found the "Use tab for navigation in code" and turned it off. 

I would suggest that either this feature is not enabled for code types that it supports or give a warning/error for c++ files so people don't get confused like I did?