Holy shit. I was able to achieve that part where the text was by the walls of the box, but never something so broken. It was usually when the last table before shit starts going bonkers is somehow badly registered. Removing it fixed everything below it for me. Then just readding it.
Tables have been a big issue before, especially the more you edit them the stranger their behavior becomes. I would suggest just copy-pasting your tables in from a google spreadsheet. It has a decent formatting that gets preserved and it doesn't get all weird on you.