Symptoms
In Internet Explorer 11 or Microsoft Edge, the preventDefault method in keyup events may not work correctly when you enable Chinese, Korean, or Japanese Input Method Editor (IME) and select non-alphabet method.
Resolution
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 MS16-084: Security update for Internet Explorer: July 12, 2016.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology that Microsoft uses to describe software updates.
