Hate this inconsistent functionality with Safari. Doesn't happen on iPadOS Safari, either. Been roughly a year here and good solution or informative yet. What's worse is, for me, this is resulting in a redirect loop at the network level and unfortunately Safari's DevTools interface doesn't even show basic HTTP requests that are pure 301 redirects. This would at least help me confirm that my issue is relating to cookies since then I could see the actual HTTP headers.