ReturnReceipt disappears when saveing as draft

Hello All,

A user exposed a strange behavior of Notes client, which is reproducable in any case we try…

If you write a memo and set the ReturnReceipt Option on, then save as draft, reopen, save again → Option is gone!!!

If you reopen the dialog, while opening memo → Option is still there.

This happens only for the first time you reopen a document…

Is this a bug or maybe a feature, can it be resolved?

Thank you for any help and

best regards

Oliver