249223 2022-12-13 07:17:00 -0800 preventDefault() doesn't block selection on iOS 2022-12-20 07:17:15 -0800 1 1 1 Unclassified WebKit UI Events Safari 16 Unspecified iOS 16 NEW https://bugs.webkit.org/show_bug.cgi?id=197686 InRadar P2 Normal --- 1 ossman webkit-unassigned megan_gardner thorton webkit-bug-importer wenson_hsieh oldest_to_newest 1918806 0 ossman 2022-12-13 07:17:00 -0800 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. 1920778 1 webkit-bug-importer 2022-12-20 07:17:15 -0800 <rdar://problem/103556502>