SilkUIFramework detects Edge Browser as chrome because the user agent is
"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2486.0 Safari/537.36 Edge/13.10586"
and it go to Switch option 8. (Framework Version: 2.2.1)
Is this just bug and you will add ti in a newer version or is this intentional as Edge should be fully compatible with Webkit?
I've added this point to our backlog to be discussed. As of right now I don't have a definitive answer to give you, though.
Thank you for bringing this to our attention!