(thread moved from the ListView forum to the Grid forum)
Tables rows always expand vertically, so that all contents inside fits. The only way to supress this is to wrap the cell content in containers with a fixed height and an overflow style. In other words, use an Editor template. Please refer to the offline MVC Grid demos, which show how to do that. Another option is to use a popup edit form.
On a side note, I am not aware of your scenario and it is not clear why the layout change occurs in your case.
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