Just one more observation: I found that the issue seems to be depending on the size of the message. In my example project a 125 byte message can be sent but a 126 byte message cannot....
j4nnis
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Last seen
User for
Post
Replies
Boosts
Views
Activity
Thank you for your response. I did file a bug report: https://feedbackassistant.apple.com/feedback/9374056
I will try to add the additional info you mentioned.