RESOLVED FIXED 199733
A newly inserted element doesn't get assigned to a named slot if slot assignments had already happened 
https://bugs.webkit.org/show_bug.cgi?id=199733
Summary A newly inserted element doesn't get assigned to a named slot if slot assignm...
Tim Guan-tin Chien [:timdream]
Reported 2019-07-11 16:18:52 PDT
Created attachment 373973 [details] test.html STR: See test case. There is a while loop does the following twice. 1) append an element to the host and assign a slot name. The slot name is different on each run. 2) create a named slot and append it to the shadow root. 3) assert that the element created is assigned to the slot. 4) remove the element 5) remove the slot Expected: The element should be assigned to the slot correctly on both run. Actual: On the second run the element is not assigned to the slot.
Attachments
test.html (587 bytes, text/html)
2019-07-11 16:18 PDT, Tim Guan-tin Chien [:timdream] 		no flags
Details
test2.html (591 bytes, text/html)
2019-07-11 17:19 PDT, Tim Guan-tin Chien [:timdream] 		no flags
Details
test3-workaround.html (972 bytes, text/html)
2019-07-12 10:08 PDT, Tim Guan-tin Chien [:timdream] 		no flags
Details
Fixes the bug (7.98 KB, patch)
2019-10-03 23:26 PDT, Ryosuke Niwa 		no flags
DetailsFormatted DiffDiff
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Radar WebKit Bug Importer
Comment 1 2019-07-11 16:56:47 PDT
<rdar://problem/52979943>
Tim Guan-tin Chien [:timdream]
Comment 2 2019-07-11 17:19:17 PDT
Created attachment 373978 [details] test2.html The 2nd named slot is also broken without step 4 and 5.
Tim Guan-tin Chien [:timdream]
Comment 3 2019-07-12 10:08:05 PDT
Created attachment 374018 [details] test3-workaround.html Apparently removing and re-inserting the element can wake it up.
Ryosuke Niwa
Comment 4 2019-10-03 23:26:31 PDT
Created attachment 380190 [details] Fixes the bug
Ryosuke Niwa
Comment 5 2019-10-04 00:23:56 PDT
Comment on attachment 380190 [details] Fixes the bug Thanks for the reviews!
Ryosuke Niwa
Comment 6 2019-10-04 00:37:52 PDT
Comment on attachment 380190 [details] Fixes the bug Clearing flags on attachment: 380190 Committed r250709: <https://trac.webkit.org/changeset/250709>
Ryosuke Niwa
Comment 7 2019-10-04 00:37:53 PDT
All reviewed patches have been landed. Closing bug.
Ryosuke Niwa
Comment 8 2019-10-04 22:03:55 PDT
*** Bug 196347 has been marked as a duplicate of this bug. ***
Ryosuke Niwa
Comment 9 2019-11-25 14:06:12 PST
*** Bug 204559 has been marked as a duplicate of this bug. ***
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