Ron,

 

We noticed a similar issue when you open a message to a separate popup and it becomes read in the users inbox. The response to this was: 

"This appears to be a side effect of how IE handles focus. When an event like a message being marked as read happens we ensure that the mail list is refocused so hotkeys continue to work on it. IE though apparently allows other windows to also take focus away from each other so when the main window focuses the list it pushes the popout behind it. Modern browsers (including Edge and Safari) don't allow this as it clearly can be inconvenient to users, but unfortunately there isn't a simple way around it for IE."

 

Seems to be this is not something that cannot be 'fixed'

Hello All,

 

I believe we have found a work around for this and it should be in our next release.

 

Regards,