I use Firefox for viewing my Rogers/Yahoo web mail in an open tab. I have granted Yahoo mail permission to send notifications and I get a Windows 11 toast notifications when there is a new email in my inbox. The problem that I cannot figure out is that the notifications take the form of "X undefined", where X is the sender's name. There is something that is appending the word undefined to the sender's name in the notification. I also note that these notifications are "sticky", that is, they remain visible until dismissed. I would prefer that they dismiss after a few seconds and remain in the notification centre. I am using Windows 11 Home edition with the latest updates.