[Webkit-unassigned] [Bug 259308] New: Selecting text in large webpages is very slow

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Jul 18 09:13:10 PDT 2023


https://bugs.webkit.org/show_bug.cgi?id=259308

            Bug ID: 259308
           Summary: Selecting text in large webpages is very slow
           Product: WebKit
           Version: Safari 16
          Hardware: Mac (Apple Silicon)
                OS: macOS 13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: tellowkrinkle at gmail.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

To reproduce:

1. Load the Vulkan spec in Safari: https://registry.khronos.org/vulkan/specs/1.3-extensions/html/vkspec.html
2. Once it's finished loading, try to select some text
3. Do the same in Firefox

Expected result:
Selecting text doesn't lag

Actual result:
Firefox works fine, but in Safari, the highlight updates at a few fps

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