I opened a couple of sites that ask for desktop notifications, like WhatsApp and Telegram. I allowed that, and i even see those sites in the 'Websites -> Notifications' panel in Preferences. I've also pinned those tabs.
However, every time i quit Safari and launch it again all these sites ask for those desktop notifications permissions again, even though they are listed in the preferences panel. I don't know what's going on. Does this have something to do with the fact that i pinned the tabs? Or is there some other privacy setting that i'm not aware of?
I'm running Safari 12.1.2 on Mojave 10.14.6.