Content written a day earlier and saved, is today only showing partially. It seems the software did not save the content completely.
Ipad OS 26 Beta 6 - Journal App (iPad Pro 12.9, 6th Gen.)
Have you raised a Feedback report? If not, please do so at https://feedbackassistant.apple.com/ then post the FB number here. And, please, provide more information when you raise the issue.
Yes I have. The FB number is FB19720330.