@mib2berlin said in Double appointments at the same time show only one system notification:
@snertev
The Windows notifications only work with the default install to \App Data\Local\Vivaldi
If you have a "All User" install or a Standalone one it does not work, then you get the internal Vivaldi notification.
I can test two calendars later.
Cheers, mib
EDIT: Add a event to a Google and a vivaldi.net calendar at the same time shows two notifications in the the Windows notification system.
I can confirm this now , though in my case this is the first time I see them and they are displayed one after the other one.
Sincerely, I don't know if this is how it should be. However, they are surely Windows notifications.