I just noticed that when previewing links in Apple email client and Safari I’m not logged in. I thought that Safari View Controller is Safari itself and have access to website information like my password and cookies. Did I misunderstood how Safari View Controller works or is that a bug?
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A View Controller is likely a HTML rendering component. A quick Google shows it to use WKWebView, so essentially WebKit which is not Safari (just a small part that handles rendering). Many browsers use WebKit for rendering.
For iOS (and likely Mac as well): https://webkit.org/blog/7016/ios-10-link-preview-api-in-wkwebview/
I imagine a preview is lightweight by design, so it doesn't load Safari and its extensions, cookies, autofill, etc. for every single preview. That would be terrible on battery life and the people still using mechanical hard drives would wonder why everything keeps freezing.
For iOS (and likely Mac as well): https://webkit.org/blog/7016/ios-10-link-preview-api-in-wkwebview/
I imagine a preview is lightweight by design, so it doesn't load Safari and its extensions, cookies, autofill, etc. for every single preview. That would be terrible on battery life and the people still using mechanical hard drives would wonder why everything keeps freezing.