[GTK4] WebKitTestRunner can't reliable generate pixel results 
https://bugs.webkit.org/show_bug.cgi?id=263116
Summary [GTK4] WebKitTestRunner can't reliable generate pixel results
Claudio Saavedra
Reported 2023-10-13 04:01:18 PDT
There is a bug in how the GTK4 implementation takes a snapshot of the webview for pixel results that causes them to try to capture before the contents are actually rendered. This results in WTR just getting a black PNG when running a test, that is later useless for comparison. As a result of this, the GTK4 test bot has hundreds of failures, and can't be used reliably for finding regressions.
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