[Webkit-unassigned] [Bug 198788] REGRESSION(r245818): Async scrolling: Fixed position banner jumps around page

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=198788

--- Comment #5 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
(In reply to Antti Koivisto from comment #4)

> Unnecessary nodes should be harmless. You'll probably need to write the
> optimal version of this.

They have memory cost, potentially significant (triggering jetsams).

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