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my latest chat with support
 

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Update on the last call with Apple: They provided a CloudKit debugging profile, which collected some logs, and that log was sent to iCloud engineers. Waiting for another call with them today or tomorrow.
 
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I'm having the same issues. Tabs not syncing and updating. Black tabs shown. When tabs are shown, it generally is a mix of old tabs and current tabs. Click on one, and it disappears. But for me, bookmarks are also not syncing. The tab issue is annoying, but the bookmark issue has already messed up my bookmarks after I made changes on two different devices only to end up with things completely messed up on all devices due to the syncing error.
 
Didn't know this was an issue with iOS14
Have been trying to diagnose my pfSense for the last hour...
Wish I would have found this thread sooner
 
I called Apple and they want to investigate this issue and call me back next tuesday.
I send them some Screenshots of this issue. The problem at my point is, that i get icloud tabs from an iphone i deleteted und send back to apple some days ago, maybe 5 to 7 days. The guy told me he need some time to investigate and so i have to wait.
 
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Just sharing something that worked for me. I was having this issue with my MacBook Air. Other devices (iPhone, iMac, iPad, etc.) were working fine and showing iCloud tabs as usual. While I was not looking to find a solution, I was working to fix another unrelated problem (random internet disconnects - home wifi issue). I disabled IPv6 setting on my router and it fixed the wifi issues but my iCloud tabs on MacBook Air also came back at the same time (magic).

I don't know, if it is just iCloud tabs randomly showing up for a little while or if IPv6 setting was the problem. It seems to be working for me, for now.

Another important bit: This started happening with my MacBook Air around the same time when I upgraded to new router last month and IPv6 setting was enabled on those routers by default (My previous router had IPv6 disabled).
 
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My iCloud tabs were syncing correctly for a few minutes earlier today. Hoorah!!! They no longer are. Booooooo.

Whereas they had been previously, bookmarks and favourites don’t appear to be syncing now. 😩

As a reminder, I’m just using iPad and iPhone, both on 14.2.
 
I have had the same problem. iMac (Fall 2020), iPhone SE (2020) and iPad Air 2, and they all variably show/don't show the other devices tabs, and when they do often the tabs are outdated or incomplete. I spent a lot of time with an Apple tech support person, and he was able to replicate the problem too on his devices, so it must be a systemic problem. We went through the process of checking/resetting settings, restarting devices, and it was still inconsistent. Right now my iMac shows nothing. My iphone shows iPad only, not the iMac. The iPad right now is a floor away so I don't want to run and get it, but the last time I looked on that device it showed both iMac & iPhone, but with non-updated lists.
 
I tried debugging this from the console and no dice. It seems Safari doesn't dump enough data in release mode. I was wondering if anyone had a look with webkit nightlies, even better if you built it yourself. I am also not sure if webkit is using the same codebase/protocol or even support iCloud tabs?

On another note, the reason I use Safari is because of efficiency: much better on battery, mem, etc.. also security -- having worked on browsers I can never use Chrome (trading efficiency for security -- nope, bad idea). Because of this bug and the extension ecosystem becoming closed and reducing even the few number of extensions we have, I am thinking of moving on to Firefox, any experience with them on these fronts? And if anyone from Apple is reading, devs are not happy, we are switching to WSL, even the most loyal of us, so please get your act together.
 
Apple support is amazingly clueless on this. This is a core product feature of their flagship browser. You would think Apple employees have noticed this is broken on their devices as well. Perhaps they all run Chrome? lol
 
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Apple support is amazingly clueless on this. This is a core product feature of their flagship browser. You would think Apple employees have noticed this is broken on their devices as well. Perhaps they all run Chrome? lol
Sometimes I think Apple employees don't use Safari either.

I've been complaining about a bug where the "This page is using significant memory" warning on some web pages keeps coming back after being dismissed for a couple years now and never get any response and the bug remains.
 
Not sure if they have fixed the issue but all my Safari tabs seem to be syncing perfectly just like on previous versions of iOS

Edit: seems I spoke too soon, just lost all my tabs on my iPad and iPhone lol
 
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I’m unable to see ANY tabs at all from my iPad on my iPhone. There’s just nothing under the Safari tabs. On my iPad I see the ones from my iPhone and they’re updating instantly. Already made sure syncing is turned on. Does anyone else have this problem? Or is this thread mostly related to the tabs not updating?
 
It seems that for me, across 4 devices (2 MacBooks, iPhone, iPad), when I first check in the morning after no use overnight, I will either see 3 or 4 devices accurate. As soon as I start using devices though, it either does not update tabs across devices, or all info disappears, or one or more devices disappear. It's like it is able to update the tab info overnight and/or it is pulling something from hours ago (which overnight is accurate), but then in normal use, it just doesn't update/keep up.
 
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It seems that for me, across 4 devices (2 MacBooks, iPhone, iPad), when I first check in the morning after no use overnight, I will either see 3 or 4 devices accurate. As soon as I start using devices though, it either does not update tabs across devices, or all info disappears, or one or more devices disappear. It's like it is able to update the tab info overnight and/or it is pulling something from hours ago (which overnight is accurate), but then in normal use, it just doesn't update/keep up.
exactly the same behavior here

Could Macrumors write an article about this? Many users, maybe all iOS 14 / Big Sur Users are affected?
 
Tabs are actually syncing for me this morning. Though originally when I checked on my iPad it was showing tabs I closed last night on my iPhone, but when I opened Safari on my iPhone and closed it, the tabs disappeared off my iPad.

I’m not sure if this is related, but I’m also finding today that syncing of the iCloud Photos library now has a slight delay as well (upwards of a minute) and there’s also a noticeable delay showing the devices in the iCloud iOS settings and also showing device details. As such there seems to be delays in all of iCloud today.
 
Tabs are actually syncing for me this morning. Though originally when I checked on my iPad it was showing tabs I closed last night on my iPhone, but when I opened Safari on my iPhone and closed it, the tabs disappeared off my iPad.

I’m not sure if this is related, but I’m also finding today that syncing of the iCloud Photos library now has a slight delay as well (upwards of a minute) and there’s also a noticeable delay showing the devices in the iCloud iOS settings and also showing device details. As such there seems to be delays in all of iCloud today.

Been seeing a number of issues crop up for iCloud related functions. At this time Apple is claiming all is well.
87109B49-226D-4A71-8F7C-D697AF074179.png
 
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Did sign-out/in on all devices, with painful setup of apple pay 3cards on 3 devices. iCloud tabs still are broken
 
Just adding to it, same here, has been ongoing for weeks.

I factory reset my iPad and now the problem is worse because it’s showing me super old tabs for the pre-reset iPad on the same iPad.

Its like I created a phantom iPad trapped back in time.

I can delete the tabs but they came back. Always the same list of a dozen or so.

Have contacted support and they can’t solve it.
 
I have this same issue. Tabs not appearing in Safari for MacOS was the first symptom. Now it's spreading...

I noticed that if I disable Safari in iCloud settings, then enable it again after a few minutes, the tabs appear for a short time then disappear again.

I just updated to Big Sur to see if it would resolve the issue -- it did not.
 
I have this same issue. Tabs not appearing in Safari for MacOS was the first symptom. Now it's spreading...

I noticed that if I disable Safari in iCloud settings, then enable it again after a few minutes, the tabs appear for a short time then disappear again.

I just updated to Big Sur to see if it would resolve the issue -- it did not.
Oh - interesting you just updated to Big Sur but had the issues before that. I assumed it was because of Big Sur as I didn't have this happen until Big Sur.
 
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