Select Box Closing by Itself

Has anyone had any issues with IE closing down a select box by itself?

I have a drop down list of options from a database about 5000+.
But when I click on the drop down box with IE the select box closes down and displays this is a required field.

I have tested with Mozilla and the select box works fine.

Just wondering if this is an IE 11 issue that others have seen…

Please let me know if this happens to you also.

Thanks

Kevin

I don’t have this issue. If you set compatibility mode in IE does it work then?