NEW 249223
preventDefault() doesn't block selection on iOS 
https://bugs.webkit.org/show_bug.cgi?id=249223
Summary preventDefault() doesn't block selection on iOS
Pierre Ossman
Reported 2022-12-13 07:17:00 PST
This issue is specific to Safari on iOS. It doesn't happen in Safari on macOS, nor in other browsers. We (noVNC) have a canvas where we grab all UI events (keyboard, mouse, touch), pass them on to the remote system, and call preventDefault() to avoid both a local and remote action. For the most part, this works well, but not for selections on iOS. There are two primary cases we've seen: * Pressing Cmd+A * Double-clicking In these cases, we get a local selection in Safari as well, which means we get a blue overlay annoying the user. We're trying to work around most of it by using -webkit-user-select, but it is difficult to handle all cases.
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Radar WebKit Bug Importer
Comment 1 2022-12-20 07:17:15 PST
<rdar://problem/103556502>
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