[Webkit-unassigned] [Bug 235185] New: 100% CPU load with Epiphany on some webpages

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=235185

            Bug ID: 235185
           Summary: 100% CPU load with Epiphany on some webpages
           Product: WebKit
           Version: Other
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Major
          Priority: P2
         Component: Compositing
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: kdavenpo at tx.rr.com
                CC: simon.fraser at apple.com

I had to force Xvnc to start with software GL (glvnd & Mesa GL) because NVIDIA GLX is not supported in VNC by the official driver. This was the only way to enable Epiphany to work within VNC. 

Now I have found rendering AND displaying some pages of results at ancestry.com max out the CPU in all 16 threads. The CPU's stay at 100% as the webpage is open.

On the same host, with hardware rendering in X11, Epiphany does not have a problem on those pages.

On Fedora 34, latest Epiphany 40.6 and webkit2gtk3-2.34.1
AMD 5800X and GeForce 9800+ GTX

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