With Safari Push Notifications enabled for websites (e.g.: MacRumors, 9to5mac, eBay, etc), and showing up as "Allow" in Safari Preferences, they still don't push notifications. Temporarily, they work following them being removed, and revisiting the website involved to add them again. However, as soon as one reboots, they never work again. I've scoured around, and while I've found a couple questions posted on the Apple Support forums, there have been no answers. Has anybody else experienced this issue, and ideally fixed it? Of note, I had this originally on an rMBP, and still have it on the iMac that replaced it.