Does anyone have any input on this issue? I also wonder how many of you use the SS Razor Plugin? http://stackoverflow.com/questions/21490801/accessing-session-in-the-servicestack-razor-view
To help with debugging I would call your own method from Razor views so you can put a breakpoint and inspect the values passed in.
You should also hopefully be able to debug v4.09 source code using the source symbols published with NuGet, some instructions:
As for SS.Razor, all of https://servicestack.net is built with it.