RESOLVED INVALID 221968
Wrong appearance for onbeforeunload dialog 
https://bugs.webkit.org/show_bug.cgi?id=221968
Summary Wrong appearance for onbeforeunload dialog
yann
Reported 2021-02-16 09:49:24 PST
Hello, The alert message shown by onbeforeunload doesn't look like an alert or a confirm box which are centered relatively to the browser window. Instead, it is centered on the screen and looks looks a system window. Depending on the position and size of the browser window, the onbeforeunload window can appear without overlapping the webpage it's related to, which is pretty confusing.
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Radar WebKit Bug Importer
Comment 1 2021-02-16 09:49:32 PST
<rdar://problem/74395158>
Smoley
Comment 2 2021-02-23 18:43:48 PST
This is Safari UI. Please file feedback via feedbackassistant.apple.com and post the report number here for association. Thanks!
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