Hi @DylanUrquhart, there have been some recent changes in the way that custom code is validated, a “hands off” approach is being taken, so we are not validating the custom code you are pasting into the embed.
I would check that the table tag is properly closed in html and then republish the site. Often checking custom code requires a process of elimination, but that is first thing to check.
Also, it is important to remember that custom code only is rendered on the published site, so the issue does not appear in the designer (in this case).
On the published site, because the closing table tag is not found, any new table rows get appended to the previous table (including other content not intended to be shown in table).
I will be here to help, let me know how it goes after change and republish.
Thanks in advance