Incorrect website rendering under iOS 26.2

Question

Created 1w

Replies 4

Boosts 0

Participants 3

Starting with iOS 26.2, when Safari tabs are set to Bottom or Compact view, some pages are not rendering properly. The error does not occur in Top view.

For some pages, scrolling causes rendering to be very slow, causing the user to experience page breaks and missing parts. If the user waits a few seconds, the missing parts of the page will appear, but the issue will reoccur when scrolling further. We have tested this on all available iOS devices and the issue occurs on all iPhones running iOS 26.2. The issue does not occur on iOS 26.1, and we have not experienced it on devices running iOS 18.

The issue can be reproduced on the following pages with an iPhone running iOS 26.2: https://fotosakademia.hu/products/course/fotografia-kozephaladoknak-haladoknak https://oktatas.kurzusguru.hu/products/course/az-online-kurzuskeszites-alapjai

Boost

Answer 1

Frameworks Engineer OP

Apple

6d

Could you please use Feedback Assistant to report an issue for this problem; start the issue soon after reproducing the bug so it will hopefully capture performance information.

0

Answer 2

akoskiss OP

6d

I have uploaded the system diagnostic data here: https://feedbackassistant.apple.com/feedback/21749211

0

Answer 3

akoskiss OP

4d

We have now narrowed down the issue. This specific CSS class (blurred background image) is causing Safari to behave unexpectedly in Compact and Bottom tab view on iOS 26.2, while the error does not occur in Top tab view.

.blurred-background-image {
    position: fixed;
    left: 0;
    right: 0;
    background-position: center center;
    background-size: cover;
    width: 100vw;
    height: 100vh;
    -webkit-filter: blur(300px);
    -ms-filter: blur(300px);
    filter: blur(300px);
    z-index: 0;
}

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Answer 4

DTS Engineer OP

Apple

4d

Thank you for filing FB21749211. I added some notes to your bug report referring to this forums post. I'll check the status again later.

Please continue testing your software in new system software updates and beta releases as they become available. And please update the status of your bug whenever you do a new test. Please see https://developer.apple.com/download/ for the most recent beta releases.

0