I'm considering upgrading the XamDockManager from version 10.3 to 11.2 and noticed a considerable difference that may prevent me from upgrading at all.  This is my 2nd attempt at upgrading from 10.3 to a latter version and this time around I want to make sure its not just me overlooking something obvious.

In version 10.3 I can have 2 or more WebBrowser Control inside a TabGroupPane and tab through all the WebBrowsers as expected but in 11.2 when I try to select an inactive tab it appears to become active for a brief moment then goes back to being inactive and the tab that was active regains focus again.  This makes it appear as if only one tab can be Active or viewed in a TabGroupPane when all the tabs have WebBrowser Controls in them.  I have attached a document with a link to an example where I have two solutions with the same code but one references the 10.3 libraries where you can see it work as expected and another references the 11.2 where I think there maybe a bug. Can someone have a look and explain why there is such a difference in behavior?