Bug 231737

Summary:

Content disappears after screen height

Product:

WebKit

Reporter:

Mish <mish>

Component:

Layout and Rendering

Assignee:

Nobody <webkit-unassigned>

Status:

NEW

Severity:

Critical

CC:

bfulgham, simon.fraser, webkit-bug-importer, zalan

Priority:

Keywords:

InRadar

Version:

Safari 15

Hardware:

Mac (Intel)

OS:

macOS 11

Attachments:

Description	Flags
Screen recording	none
Another recording of the bug	none
Search bar overlay when bug is triggered	none
Sample 1	none
Sample 2	none
Sample 3	none
Sample 4	none
Bug on Safari iOS	none
Bug on Safari iOS	none
Bug on Safari iOS	none
Sample 5	none
Sample 6	none
Sample 7	none

Mish

Reported 2021-10-14 06:01:31 PDT

Created attachment 441208 [details] Screen recording no adblocker is in use and the issue happens on wikipedia and other sites

Attachments
Screen recording (44.53 MB, video/quicktime) 2021-10-14 06:01 PDT, Mish	no flags	Details
Another recording of the bug (18.69 MB, video/quicktime) 2021-10-17 06:03 PDT, Mish	no flags	Details
Search bar overlay when bug is triggered (60.08 MB, video/quicktime) 2021-10-19 13:46 PDT, Mish	no flags	Details
Sample 1 (221.09 KB, text/plain) 2021-10-23 09:18 PDT, Mish	no flags	Details
Sample 2 (224.83 KB, text/plain) 2021-10-23 09:18 PDT, Mish	no flags	Details
Sample 3 (791.86 KB, text/plain) 2021-10-23 09:22 PDT, Mish	no flags	Details
Sample 4 (230.61 KB, text/plain) 2021-10-24 07:11 PDT, Mish	no flags	Details
Bug on Safari iOS (1.69 MB, image/png) 2021-10-29 08:36 PDT, Mish	no flags	Details
Bug on Safari iOS (817.48 KB, image/png) 2021-10-29 08:37 PDT, Mish	no flags	Details
Bug on Safari iOS (620.58 KB, image/png) 2021-10-29 08:38 PDT, Mish	no flags	Details
Sample 5 (372.72 KB, text/plain) 2021-10-29 08:38 PDT, Mish	no flags	Details
Sample 6 (202.22 KB, text/plain) 2021-10-29 08:39 PDT, Mish	no flags	Details
Sample 7 (4.24 MB, text/plain) 2021-10-29 08:39 PDT, Mish	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Simon Fraser (smfr)

Comment 1 2021-10-14 09:33:45 PDT

Do you have Safari extensions installed? Does disabling them fix this?

Mish

Comment 2 2021-10-14 12:37:54 PDT

the bug occurs only occasionally disabling extensions, reloading the page and cleaning cache has no effect, in this broken state only a restart helps also i remember somewhat similar thing happened in PDF files (pages would stop to render), but not sure if it still happens and if it is caused by the same bug will report back when i'm able to trigger it again thanks

Mish

Comment 3 2021-10-17 06:03:38 PDT

Created attachment 441534 [details] Another recording of the bug was having the bug again today, randomly no extensions activated, caches clean

Mish

Comment 4 2021-10-19 13:46:33 PDT

Created attachment 441786 [details] Search bar overlay when bug is triggered when the bug occurs, search bar overlay stays within viewport

Simon Fraser (smfr)

Comment 5 2021-10-19 13:49:59 PDT

When this happens, can you find the PID of the WebProcess for that tab in Activity Monitor, and then run 'sample <pid>' and attach the output?

Radar WebKit Bug Importer

Comment 6 2021-10-21 06:03:02 PDT

<rdar://problem/84504637>

Mish

Comment 7 2021-10-23 09:18:11 PDT

Created attachment 442261 [details] Sample 1

Mish

Comment 8 2021-10-23 09:18:33 PDT

Created attachment 442262 [details] Sample 2

Mish

Comment 9 2021-10-23 09:19:49 PDT

Added some samples from Activity Monitor page: https://shikijs.github.io/twoslash/

Mish

Comment 10 2021-10-23 09:22:09 PDT

Created attachment 442264 [details] Sample 3

Mish

Comment 11 2021-10-24 07:11:31 PDT

Created attachment 442309 [details] Sample 4 occurred on https://www.typescriptlang.org/docs/handbook/interfaces.html

Simon Fraser (smfr)

Comment 12 2021-10-25 11:49:27 PDT

None of those samples show anything unusual going on. Mish, what is your display configuration and hardware setup?

Mish

Comment 13 2021-10-25 12:37:16 PDT

macOS Big Sur 11.6 (20G165) MacBook Pro 13 (2017), Two Thunderbolt 3 ports, 2.3 GHz Dual-Core Intel Core i5, 8GB RAM no external display/graphics, resolution set to "Scaled" the bug started happening after Safari got updated to new look

Mish

Comment 14 2021-10-29 08:36:08 PDT

i'm currently noticing same thing on Safari on iOS

Mish

Comment 15 2021-10-29 08:36:54 PDT

Created attachment 442816 [details] Bug on Safari iOS

Mish

Comment 16 2021-10-29 08:37:54 PDT

Created attachment 442817 [details] Bug on Safari iOS

Mish

Comment 17 2021-10-29 08:38:20 PDT

Created attachment 442818 [details] Bug on Safari iOS

Mish

Comment 18 2021-10-29 08:38:59 PDT

Created attachment 442819 [details] Sample 5

Mish

Comment 19 2021-10-29 08:39:17 PDT

Created attachment 442820 [details] Sample 6

Mish

Comment 20 2021-10-29 08:39:48 PDT

Created attachment 442821 [details] Sample 7

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