228693 2021-08-01 17:47:29 -0700 Calling unobserve on ResizeObserver should not clear existing observations in active targets 2021-08-03 23:48:13 -0700 1 1 1 Unclassified WebKit DOM WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED https://bugs.webkit.org/show_bug.cgi?id=157743 https://bugs.webkit.org/show_bug.cgi?id=228679 InRadar P2 Normal --- 227194 1 rniwa rniwa a cathiechen cdumez simon.fraser webkit-bug-importer oldest_to_newest 1781170 0 rniwa 2021-08-01 17:47:29 -0700 According to the spec https://drafts.csswg.org/resize-observer/#dom-resizeobserver-unobserve, we should not be clearing the active targets when unobserve is called. 1781171 1 rniwa 2021-08-01 17:49:36 -0700 Looks like Chrome has the same bug so that's a bit concerning... 1781172 2 434729 rniwa 2021-08-01 18:10:04 -0700 Created attachment 434729 Patch 1781242 3 434729 cdumez 2021-08-02 08:19:41 -0700 Comment on attachment 434729 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=434729&action=review r=me with changelog fix. > LayoutTests/ChangeLog:13 > +2021-08-01 Ryosuke Niwa <rniwa@webkit.org> double change log. 1781364 4 434729 rniwa 2021-08-02 13:01:49 -0700 Comment on attachment 434729 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=434729&action=review >> LayoutTests/ChangeLog:13 >> +2021-08-01 Ryosuke Niwa <rniwa@webkit.org> > > double change log. Weird. Not sure what happened here. Will fix before landing. 1781365 5 rniwa 2021-08-02 13:03:19 -0700 Committed r280551 (240178@main): <https://commits.webkit.org/240178@main> 1781366 6 webkit-bug-importer 2021-08-02 13:04:24 -0700 <rdar://problem/81425446> 1781835 7 a 2021-08-03 23:44:27 -0700 This might be a spec misunderstanding: From the spec: [[activeTargets]] represents all Elements whose size has changed since last observation broadcast that are eligible for broadcast. What makes an element eligible is not explicitly defined. My intuition is that calling "unobserve" on an elment should make it inelligible. 1781837 8 a 2021-08-03 23:48:13 -0700 Filed spec bug: https://github.com/w3c/csswg-drafts/issues/6493 434729 2021-08-01 18:10:04 -0700 2021-08-02 08:19:41 -0700 Patch bug-228693-20210801181004.patch text/plain 8424 rniwa SW5kZXg6IFNvdXJjZS9XZWJDb3JlL0NoYW5nZUxvZwo9PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09Ci0tLSBTb3VyY2UvV2Vi Q29yZS9DaGFuZ2VMb2cJKHJldmlzaW9uIDI4MDUyMykKKysrIFNvdXJjZS9XZWJDb3JlL0NoYW5n ZUxvZwkod29ya2luZyBjb3B5KQpAQCAtMSwzICsxLDI3IEBACisyMDIxLTA4LTAxICBSeW9zdWtl IE5pd2EgIDxybml3YUB3ZWJraXQub3JnPgorCisgICAgICAgIENhbGxpbmcgdW5vYnNlcnZlIG9u IFJlc2l6ZU9ic2VydmVyIHNob3VsZCBub3QgY2xlYXIgZXhpc3Rpbmcgb2JzZXJ2YXRpb25zIGlu IGFjdGl2ZSB0YXJnZXRzCisgICAgICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVn LmNnaT9pZD0yMjg2OTMKKworICAgICAgICBSZXZpZXdlZCBieSBOT0JPRFkgKE9PUFMhKS4KKwor ICAgICAgICBUaGUgYnVnIHdhcyBjYXVzZWQgYnkgUmVzaXplT2JzZXJ2ZXI6OnJlbW92ZU9ic2Vy 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