CSS Bug on Checkbox Datagrid

[aswzen]

I am using latest web browser, i found something that maybe a minor bug
that is when you create a datagrid with checkbox column something odd rendered under the checkbox header.
Look at picture that i attached

Bug were tested on Windows 7 with

• Firefox v.38
• Chrome v.43
• IE v.11 note: IE rendered same as Chrome

here the fiddle
http://jsfiddle.net/aswzen/s7zqdeu1/

Thanks in advance

[jarry]

Please try to download the patch from http://www.jeasyui.com/download/downloads/jquery-easyui-1.4.2-patch.zip.