It's been a while now that I'm facing this issue. From time to time, and on some websites, I have to either:

  • Accept again the cookies, and/or
  • Login again.

I'm using macOS 10.14.4 and Safari 12.1. It's quite annoying. Any suggestion?

  • What’s the expiration policy o these cookies that are lost periodically? Are you able to inspect them in Safari and nail down if this is intentional? – bmike Mar 31 at 15:20
  • @bmike I don't think that's the problem, since it does not seem to happen at periodical intervals. But I'll keep an eye on that too! – wrong_path Mar 31 at 15:22
  • 1
    Perfect +1 I hope to learn something here. My suspicion turns to server side clearing if they are trying to track the source IP and you are mobile or moving to a new network. These things (what an actual web site is today) are so complicated, peeling back the layers server / client / cache / cdn side is quite a chore and needs a lot of technical knowledge. – bmike Mar 31 at 15:32
  • Certain websites, or every website, periodically? There are definitely some websites that ask me to login way too often and I no longer even bother with clicking the “remember me” box. I’ve always just assumed those websites are to blame since most sites work fine. – dwightk Mar 31 at 15:36
  • @dwightk Just some websites like Twitter, BBC (UK) and GitLab. – wrong_path Mar 31 at 15:37

It could be of because reasons mainly,

  1. Any unwanted extension that is supposed to behave this way
  2. Some software running in background to clear caches for freeing up space
  3. Browsing in Incognito Mode

Chrome and FF have a feature "Continue where you left off". With this enabled session cookies are not being deleted anymore (see Chrome doesn't delete session cookies).

Check if these affected cookies have "Session" as expire date: probably in this case Safari is working well, the issue is that some sites are saving session cookies instead of long exp date cookies.

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