The image element and other elements may overlap when you edit the contentEditable div element and then scroll down the webpage in Internet Explorer 11.
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 Cumulative security update for Internet Explorer: April 11, 2017.
Learn about the terminology that Microsoft uses to describe software updates.