Prevent CellTable resizing on its own

I have a cell table that takes up 100% of the width of the center of a DockLayoutPanel. When an element in the CellTable is selected, a bus event is fired to open a new view. For some reason, when the application returns to the original view (with the CellTable), the CellTable is scrunched over to the left side of the center of the DockLayoutPanel (width is decreased; the table's left-alignment doesn't move). I think the CellTable is responsible for this because the original view is completely reconstructed both times it is displayed, but the CellTable is more-or-less global. Is there any way to prevent this? What is even happening?

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