Describe the bug
A datagrid contained within a modal dialog has several display issues when several columns are hidden via hideColumn().
To Reproduce
I don't have a good example that illustrates exactly the issue being experienced in Landmark. If this isn't enough info to duplicate the issue we may need a webex meeting.
Expected behavior
Modal dialog window would be sized correctly, horizontal scrollbar is not displayed, column header span across the entir

This is what Landmark is experiencing.
I believe this is resolved alongside the solution for #1764. Either way I can't reproduce.

I am seeing the issue part about the modal being too big. Maybe that can be fixed by setting a maxWidth on the modal. But could be addressed. Im not seeing the issue about the columns not aligning. But i think this is a good test case to include (lots of columns, datagrid on a modal)
<div id="modal-content" style="display: none; max-width: 800px">
<div id="datagrid">
</div>
</div>
Does improve the behavior
QA Passed. Moving to Done.
Tested in: https://4170-beta0-enterprise.demo.design.infor.com/components/datagrid/example-modal-datagrid across all OS browsers and devices.
Did this also fix the issue were the column header and data cells do not stay aligned when the horizontal scrollbar is used?
Play the Enterprise-1802.gif (it's contained within the attached Enterprise-1802.zip file) and you'll see the alignment issue.