Hi all,

I`m struggling to fix an issue which arise with the new Salesforce Lightning Experience. So, I have a Visualforce page which is assigned to the Edit functionality of Accounts. In Salesforce Classic mode everything works perfectly good, but when I switch to the new Lightning Experience I get a strange behavior on redirect - the lightning is removed and I get redirected to the classic mode page. I hope to clarify things with the below screenshots.

First, I edit one of my accounts to go to my Visualforce page.


First, I edit one of my accounts to go to my Visualforce page.


First, I edit one of my accounts to go to my Visualforce page.

I'm using PageReference object in my Apex controller for navigation, but from what I've red it is not working with the Lightning.
For example:
 

    PageReference pg = null;
    try{
        pg = stdController.save();  
    }catch(Exception ex){           
        Logger.Instance.LogException(ex, false);
    }

    return pg;

If anyone can give me directions, I would be very grateful!