188752 2018-08-20 11:44:48 -0700 slotchange event does not fire with initial content 2018-08-27 21:22:28 -0700 1 1 1 Unclassified WebKit DOM Safari 11 Mac macOS 10.13 RESOLVED DUPLICATE 169718 InRadar P2 Normal --- 148695 1 jan webkit-unassigned cdumez rniwa webkit-bug-importer oldest_to_newest 1451651 0 jan 2018-08-20 11:44:48 -0700 See http://jsbin.com/wirubeq/edit?html,console,output. In Chrome/Firefox, when a component with light DOM content is attached to the document, and a slot is created with a slotchange listener, the slot will raise an initial slotchange event. Safari does not do this. The Chrome/Firefox behavior is useful because it allows a component to concentrate its initial content processing in a slotchange handler. To get consistent behavior, we have to normalize the slotchange behavior across browsers, which is cumbersome. 1451953 1 webkit-bug-importer 2018-08-20 21:11:29 -0700 <rdar://problem/43544149> 1454283 2 rniwa 2018-08-27 21:22:28 -0700 This is a duplicate of webkit.org/b/169718. *** This bug has been marked as a duplicate of bug 169718 ***