I have a custom web part, and if a user clicks on Edit web part, the properties pane in IE 11 appears and disappears, so sort of flickers.

In IE 8 it works fine.

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    First step: check on other browsers (firefox and chrome at least) Second step: check on identical browser versions on a second machine do you get the same results on both machines? do you get the same flicker on up-to-date versions of chrome and firefox?
    – JonS
    Apr 7, 2015 at 12:04

1 Answer 1


This simple fix worked for me.

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