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Web dev here - not surprising safari is having issues with Facebook infinite scroll. Same happens to me on tumblr and Pinterest. The truth is many web companies target chrome as the primary browser to test development because it has the largest market share of users, especially worldwide. Safari unfortunately is looked at as the “IE” in the web dev community and is hated because the WebKit makes some interesting choices in how they support the html/js/css spec.

While the folks at WebKit have the ultimate say on how/what features they decide to support, Facebook and others have a responsibility to reasonably test their code base to make sure things run decently.

Fun fact: submitted a similar complaint to Pinterest once about overall poor performance in safari. Their response: “Use chrome instead.”
 
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... Safari unfortunately is looked at as the “IE” in the web dev community...

Perhaps, and doesn't matter. Because, like IE back in the day, enough people use it to make programming for it necessary.

18% of 3 billion Facebook users means that 540 million users are on Safari, and Facebook is driven by profit.

Once Meta figures out that Safari's newsfeeds are effed up, they will fix.
 
As suddenly as this issue appeared it has now disappeared - Facebook is now working normally in Safari 16.2 in MacOS Ventura 13.1. Go figure...

Yep. Seems to be working as crappy as ever in Safari 13.1.2 in High Sierra, but it's working.

Go figure... the problem came and went without any software updates from Apple. All that whining and drama in the Apple user forums for nothing. 😆
 
Was coming in to say the same thing! Facebook fixed something tonight Jan 16 2023. Scrolling is working normal now. I had old alerts that I have already checked enabled again. Almost like they reverted something.
 
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Yes, seems to be working normally now for me too in Safari on Ventura 13.1. Quietly fixed, it seems ...
Yep, the crazy scrolling mysteriously disappeared and working as it did before. Thanks to anyone that reported this issue to Facebook.
 
Safari 13 on High Sierra. Facebook starting today... I cannot click on "view more comments" in a thread on the newsfeed without a blinking of comments that never stops. They load for a split second, then go blank, then blink back for a flash, then gone... repeat never ending.

Anyone else?
 
Safari 13 on High Sierra. Facebook starting today... I cannot click on "view more comments" in a thread on the newsfeed without a blinking of comments that never stops. They load for a split second, then go blank, then blink back for a flash, then gone... repeat never ending.

Anyone else?
Yep. Same here on Mojave, Safari 14.1.2
Scratch that last message, it's working now.
 
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Yep. Same here on Mojave, Safari 14.1.2
Scratch that last message, it's working now.
Me too. Mine also stopped flashing... however, now when I click on the comments from within newsfeed, the popup opens... no more flickering, but most of the comments are just missing.
 
Me too. Mine also stopped flashing... however, now when I click on the comments from within newsfeed, the popup opens... no more flickering, but most of the comments are just missing.
This is the same for me too on Safari with High Sierra. I really wait for the solution. I know this is an old machine but I don't think I'll buy newer yet because of this problem or change to other browser.
 
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