Data Grid Extension not working after upgrade [from 7 to 8]

We have used Data Grid Extension for data gird widget. We are using context menu to show hide columns in grid using Data Grid Extension. It was working fine in Mendix 7 but after migration, it working wired. Context menu on clicking on column headers, is getting displayed at the bottom of the page. If we click on menu item, it throws exception. Does anybody face such issue? Any help will be appreciated.  
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