Symptoms
This issue occurs when you use the onstorage event handler in inline frame (iframe) tags in Internet Explorer 11.
Cause
This issue occurs because the onstorage event handler doesn't get invoked in another tab.
Update information
To fix this issue, install the most recent cumulative security update for Internet Explorer. To do this, go to Microsoft Update. Additionally, see the technical information about the most recent cumulative security update for Internet Explorer. Note This update was first included in the Description of the cumulative security update for Internet Explorer: October 13, 2015 (MS15-106).
Status
Microsoft has confirmed that this's a problem in the Microsoft products that are listed in the "Applies to" section.
References
See the terminology that Microsoft uses to describe software updates.