We
have confirmed the issue “Comments are not preserved properly on
Text Markup annotations” and logged it as a
defect. The fix for the issue will be available in our upcoming Volume
1, 2023 SP release on May 03, 2023, tentatively. You can track the status of the issue through the following link.
Feedback link: Comment are not preserved properly on TextMarkup
annotations | Issue Feedback
Disclaimer: "Inclusion of this solution in the weekly
release may change due to other factors including but not limited to QA checks
and works reprioritization."