After you install MS16-095: Cumulative security update for Internet Explorer: August 9, 2016, the table cell may collapse unexpectedly if it is inside a nested table element.
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 MS17-006: Description of the security update for Internet Explorer: March 14, 2017.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Learn about the terminology that Microsoft uses to describe software updates.