Hi @culvercm.
Thank you for contacting us and sorry for this issue.
It could be caused by some plugin you use. Could you please temporarily disable all plugins (you can skip disabling Jetpack) and see if the issue goes away.
If it does, start enabling one by one while reloading the page until the issue reappears.
Please let me know if this helps.
Kind regards.
@culvercm I see the sidebar shows as expected now. Do you mind sharing what fixed it? I was thinking it was probably a missing closing or opening HTML tag somewhere.