RESOLVED LATER 233073
REGRESSION: Version not included in UA 
https://bugs.webkit.org/show_bug.cgi?id=233073
Summary REGRESSION: Version not included in UA
Teodor
Reported 2021-11-12 15:18:27 PST
Created attachment 444114 [details] iPhone XR with iOS 15.2 Beta Starting with iOS 15.1 and continuing with iOS 15.2 Beta, there are issues with Version/X in User Agent string: - WKWebView on iOS 15.1 omits "Version" from UA ex. Mozilla/5.0 (iPhone; CPU iPhone OS 15_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 OptionalCustomUAString - WKWebView on iOS 15.2 Beta omits "Version" from UA ex. Mozilla/5.0 (iPhone; CPU iPhone OS 15_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 OptionalCustomUAString - Safari on iOS 15.2 Beta uses "Version/15.1" in UA ex. Mozilla/5.0 (iPhone; CPU iPhone OS 15_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.1 Mobile/15E148 Safari/604.1 Version is an integral part of Safari's UA and most, if not all, UA parser libraries don't assume that browser version is the same as iOS version, and thus report no browser version at all. Using `bowser` (https://www.npmjs.com/package/bowser) as an example. If you load https://bowser-js.github.io/bowser-online/ in WKWebView on iOS 15.1 or 15.2 Beta, you will see that no `browser` version is parsed.
Attachments
iPhone XR with iOS 15.2 Beta (57.45 KB, image/jpeg)
2021-11-12 15:18 PST, Teodor 		no flags
Details
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Michael Catanzaro
Comment 1 2021-11-12 15:46:23 PST
Could you show an example of the previous ("good") UA header, please?
Teodor
Comment 2 2021-11-12 17:19:21 PST
It seems that WKWebView never had "Version/X" in the UA string. Strangely this was not having an effect until the most recent release. Closing for now while I investigate this further.
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