[Webkit-unassigned] [Bug 280317] New: Safari iOS 18 crashes with nested scrollable

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=280317

            Bug ID: 280317
           Summary: Safari iOS 18 crashes with nested scrollable
           Product: WebKit
           Version: Safari 18
          Hardware: Unspecified
                OS: iOS 18
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mic.gallego at gmail.com
                CC: koivisto at iki.fi

Created attachment 472674

  --> https://bugs.webkit.org/attachment.cgi?id=472674&action=review

Crash

Hello,

Starting from iOS 18, we've experiencing a major regression crashing our Shopify theme. I have completely been unable to isolate it, so it might be due to a lot of conditions causing the problem. It seems to happen when there are nested overflowing elements.

To reproduce the issue on iOS 18 you must:

1. Open this page: https://focal-theme-carbon.myshopify.com/
2. Add at least 8 different products to the cart to cause an overflow on the cart drawer.
3. Open the drawer, scroll, and close the drawer, which will cause first a kind of page reload, and if you repeat the process, will crash the whole browser.

I have attached a video showing the crash.

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