We found that the reason for the issue was that the Bootstrap modal was preventing interactions with any elements, which are not part of the window content. This was preventing the focus of the filter menu inputs as it is in Kendo popup window, which is appended at the end of the body element and then absolutely positioned. Nevertheless we could not exactly state why is this happening in Internet Explorer only, as we have not debugged the Bootstrap code itself.
A possible solution is the one mentioned in the following forum topic
, which suggests to disable the focus listener of the modal window. Please add the following code before opening the modal window.
I hope this information helps. I wish you a great day!
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