189482 2018-09-10 14:20:30 -0700 Regression(PSON): "Swipe back" snapshot is missing when navigating back cross-process 2018-10-05 10:42:18 -0700 1 1 1 Unclassified WebKit WebKit2 WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 190314 1 cdumez cdumez commit-queue ggaren koivisto thorton webkit-bug-importer oldest_to_newest 1458232 0 cdumez 2018-09-10 14:20:30 -0700 "Swipe back" snapshot is missing/blank when navigating back cross-process (due to process swap on navigation). 1458234 1 webkit-bug-importer 2018-09-10 14:21:25 -0700 <rdar://problem/44317222> 1458237 2 thorton 2018-09-10 14:29:58 -0700 This is actually /slightly/ surprising, because the UI process owns the snapshots. But I'm sure you'll have a patch in 5 minutes. 1458304 3 cdumez 2018-09-10 16:25:50 -0700 A snapshot is taken and saved on the WebBackForwardListItem. However, it is blank. I believe it is likely the snapshot is taken too late after we've already reset some WebPageProxy state due to process swapping. 1458305 4 cdumez 2018-09-10 16:27:24 -0700 0x7febfc84e418 - WebPageProxy::continueNavigationInNewProcess() 0x7febfc84e418 - WebPageProxy::reattachToWebProcess() 0x7febfc84e418 - WebPageProxy::takeViewSnapshot() We've already reattached the the new WebProcess at the time we take the snapshot. 1458493 5 349404 cdumez 2018-09-11 10:00:44 -0700 Created attachment 349404 Patch 1458500 6 349404 ggaren 2018-09-11 10:14:28 -0700 Comment on attachment 349404 Patch We know we need to fix the content disappearing / flashing problem before we enable PSON, so it's a little weird to do this as a stopgap in the meantime -- but I also think it's harmless, and nice to get one bug out of the list. 1458510 7 349404 commit-queue 2018-09-11 10:42:37 -0700 Comment on attachment 349404 Patch Clearing flags on attachment: 349404 Committed r235898: <https://trac.webkit.org/changeset/235898> 1458511 8 commit-queue 2018-09-11 10:42:38 -0700 All reviewed patches have been landed. Closing bug. 349404 2018-09-11 10:00:44 -0700 2018-09-11 10:42:37 -0700 Patch bug-189482-20180911100043.patch text/plain 5602 cdumez U3VidmVyc2lvbiBSZXZpc2lvbjogMjM1ODk2CmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViS2l0L0No YW5nZUxvZyBiL1NvdXJjZS9XZWJLaXQvQ2hhbmdlTG9nCmluZGV4IGU2MGFiZWU0MTg5ZjE0NDJh ZmM1MmM1OTgwOTkzMDVhMjAxNzVlZDEuLmVhZDBhZjc0ZTEwMjIxZWQ2ZGU3OGU3ZDNmNjQ5Nzg5 YjExMWNmMjkgMTAwNjQ0Ci0tLSBhL1NvdXJjZS9XZWJLaXQvQ2hhbmdlTG9nCisrKyBiL1NvdXJj ZS9XZWJLaXQvQ2hhbmdlTG9nCkBAIC0xICsxLDMxIEBACisyMDE4LTA5LTExICBDaHJpcyBEdW1l eiAgPGNkdW1lekBhcHBsZS5jb20+CisKKyAgICAgICAgUmVncmVzc2lvbihQU09OKTogIlN3aXBl IGJhY2siIHNuYXBzaG90IGlzIG1pc3Npbmcgd2hlbiBuYXZpZ2F0aW5nIGJhY2sgY3Jvc3MtcHJv Y2VzcworICAgICAgICBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1Zy5jZ2k/aWQ9MTg5 NDgyCisgICAgICAgIDxyZGFyOi8vcHJvYmxlbS80NDMxNzIyMj4KKworICAgICAgICBSZXZpZXdl ZCBieSBOT0JPRFkgKE9PUFMhKS4KKworICAgICAgICBUaGUgaXNzdWUgd2FzIHRoYXQgd2hlbiB3 ZSBzd2FwIHByb2Nlc3Mgb24gbmF2aWdhdGlvbiwgd2U6CisgICAgICAgIDEuIENhbGwgcHJvY2Vz 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