[Webkit-unassigned] [Bug 203412] New: [GTK][WPE] Erratic displacement of the sticky elements when async scrolling is enabled (default behavior)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=203412

            Bug ID: 203412
           Summary: [GTK][WPE] Erratic displacement of the sticky elements
                    when async scrolling is enabled (default behavior)
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: psaavedra at igalia.com
                CC: zan at falconsigh.net
        Depends on: 202449

Scrolling inside of the sticky elements with fixed position is still not working fine for all the situations. For example: https://people.igalia.com/psaavedra/scroll.html.

In this example, the scroll inside the `div` element  is consistent but when you does a scroll in the body element it seems the fixed position element doesn't manage the offset correctly resulting in a displacement in the opposite direction of the scrolling action

The same doesn't happens disabling the async scrolling:

```
export WEBKIT_DISABLE_ASYNC_SCROLLING=OFF
```

Related to: https://bugs.webkit.org/show_bug.cgi?id=202449


Referenced Bugs:

https://bugs.webkit.org/show_bug.cgi?id=202449
[Bug 202449] [GTK][WPE] Enable async scrolling
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