subforms won't resize when adding rows to tables
I have a form that's mostly tables. Each table is in its own subform.
I have buttons on each table to add or remove rows.
Even though I have the tables set as Flowed, the subforms don't resize when adding rows, and they bleed into the following subform.
So I'm not sure what it is I'm doing wrong.
It a form for people to list their travel expenses.
Here is the hierarchy for couple of the tables:

and the layout for the Meals_subform

What am I doing wrong?