I'm not always able to delete columns and I'm not sure why

In the “More trust and safety articles” section of this page (Commitments) I’m finding that I can’t delete 2 of the 3 columns to make my layout a 1 column / 3 row layout for smaller viewports. When I try to delete the columns the header of the grid view just turns white but the column stays and doesn’t automatically shift to its own row.

I’ve noticed other times when this works well.

My assumption is this has to do with the content of the cell, which in this case is another grid.

How can I get this working?

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