Multiple users: not able to receive SMS (lands on admin's side)

Hi all,
I set up a FP3 e/OS/ (based on Android 10) with the help of the installer (great feature).
So far it seems to behave correctly with the pre-installed apps.
However, I decided to setup a second user on this phone and I do not understand why the system (original app “Message”) doesn’t allow me to receive SMS on this new user. I can send a SMS without trouble, but when a reply comes back, it lands on the admin user (only)… The new user is enabled for call & SMS by the admin.
Phone calls are OK for the new user…
Is it a bug or a wrong setup somewhere?
Many thanks for your help.
Best regards

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