Hello,
It's positive that your RDS environment is still operational. If this issue is indeed linked to the latest update, consider submitting feedback about it. Checking if others have experienced similar issues in the Feedback Hub. With the increase in reported issues, this could grab the attention of engineers.
Microsoft regularly releases updates and patches to address known issues and improve the functionality of their products. So, it's possible that a future update may resolve the issue.
Regards,
Karlie