winforms - In Visual Studio 2015, clicking on the .cs class is taking me to the .designer.cs file instead of the cs file -

i'm not sure when started happening, seems started happening after applying update 3, may related extension or something... in winforms application, when click on .cs class node in solution explorer (it's under *.designer.cs file in three, , has orange 'class' icon next it), instead of taking me .cs class has in past, takes me .designer.cs class ... useless. duplicating function of clicking on *.designer.cs node right above it.

if expand .cs class node , click on of elements there (properties, methods, etc) goes right file. i'm finding frustrating, , can't find setting or changed, nor there mention on internet can find else having problem. want old behavior back, , i'm @ loss... "just me" thing, happening else, vs2015 bug introduced, or there extension have mucking things up?

i'm using resharper (latest version), vs commands 2015 (even though it's barely functional compared previous versions), productivity power tools 2015, rename visual studio window title, ... plus standard ones see in install.

i want functionality of being able *.cs file double-clicking on in solution explorer. can help?