[Q] Not receiving push notifications from Facebook / Messenger on sleep? topic

Hi all.

Anyone else not receiving push notifications from Facebook / Messenger on sleep (with or without Stamina Mode on)?
For messages, notifications only have a 100% received rate only when a chat head is popped out and the screen is on.

Also I'm trying to figure out whether it is a Facebook / Messenger bug and/or XZ / XZ related bug.

Thanks in advance for your answers.

Kind regards.