[Webkit-unassigned] [Bug 186919] Navigation Timing data is corrupt in WebView (UIWebView/WKWebView)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=186919

--- Comment #6 from krinklemail at gmail.com ---
Still seen from iOS 15.3 and Mac Safari 15.

Estimated affected Wikipedia pageviews per day (before 1:1000 sampling):

| pageviews | wikimedia_navtiming/is_compliant/error_invalid
|-----------|---------------------------------------
|   500,000 | Discarding event because requestStart is out of order [('Mobile_Safari', '15_3')]
|   400,000 | Discarding event because requestStart is out of order [('Mobile_Safari', '14_1')]
|   400,000 | Discarding event because requestStart is out of order [('Mobile_Safari', '15_2')]
|   300,000 | Discarding event because requestStart is out of order [('Mobile_Safari', '13_1')]
|   300,000 | Discarding event because requestStart is out of order [('Safari', '15')]
|   220,000 | Discarding event because requestStart is out of order [('Safari', '14')]
|   220,000 | Discarding event because requestStart is out of order [('Mobile_Safari', '15_1')]
|   200,000 | Discarding event because responseEnd is out of order [('Mobile_Safari', '14_1')]
|   150,000 | Discarding event because requestStart is out of order [('Safari', '13')]
|   100,000 | Discarding event because responseEnd is out of order [('Safari', '14')]
|   100,000 | Discarding event because requestStart is out of order [('Mobile_Safari', '15_0')]
|   100,000 | Discarding event because requestStart is out of order [('Mobile_Safari', '14_0')]
|    90,000 | Discarding event because requestStart is out of order [('Mobile_Safari', '13_0')]
|    70,000 | Discarding event because connectStart is out of order [('Safari', '15')]
|    50,000 | Discarding event because responseEnd is out of order [('Mobile_Safari', '14_0')]
|    50,000 | Discarding event because responseEnd is out of order [('Safari', '13')]
|    30,000 | Discarding event because responseEnd is out of order [('Mobile_Safari', '13_0')]
|    30,000 | Discarding event because responseEnd is out of order [('Mobile_Safari', '12_1')]
|    20,000 | Discarding event because requestStart is out of order [('Mobile_Safari', '12_0')]

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