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I have an ECB menu popup in SharePoint 2013. It works well in other browsers, but in IE it appears too far UP from a parent dialog when clicking on the ellipsis (...) as following pic. I tried to zoom the IE browser to 110% or to resize the IE browser then the ECB menu is also working well. The problem is the Callout.js calculates the TOP property of the the ECB menu position incorrectly.
Please help us to address how to fix it, thanks.