I am trying to add a block of text to a page, and when clicking save, the page seems to refresh, but it stays on the edit page and never actually saves anything. I noticed if I remove most of the text, it will save, so I am suspecting this is possibly an issue with large pages as described here: https://www.dokuwiki.org/faq:largepage
However, I temporarily set memory_limit in my php.ini to -1 to disable it entirely, restarted the php7.3-fpm service, and this is still happening. I also do not have any of the suhosin nor varlimit values in my php.ini that this page describes below it.
Is anyone familiar with how to resolve this issue?