Hi Ken,
This seems to be an issue with the decorated select of the ReportViewer in IE11. I have logged the issue in our feedback portal
here, so that you can monitor, comment or raise its priority by voting on it.
For the time being you can either skip the selects elements from decoration:
ASPX:
Or decorate only particular zone that do not include the ReportViewer:
ASPX:
I have also updated your Telerik points for reporting this issue to us.
Regards,
Danail Vasilev
Telerik
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