Bug 255914

Summary:

REGRESSION (Safari 16.4): Dynamically set `<meter>` doesn't show the value

Product:

WebKit

Reporter:

Thomas Steiner <tomac>

Component:

New Bugs

Assignee:

Aditya Keerthi <akeerthi>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

akeerthi, webkit-bug-importer

Priority:

Keywords:

InRadar

Version:

Safari 16

Hardware:

Mac (Apple Silicon)

OS:

macOS 13

Attachments:

Description	Flags
Safari	none
reduction	none

Thomas Steiner

Reported 2023-04-25 01:33:15 PDT

Created attachment 466071 [details] Safari 1. Go to https://like-spiffy-pick.glitch.me/ on Safari Version 16.5 (18615.2.5.11.2) or Safari Technology Preview Release 168 (Safari 16.4, WebKit 18616.1.10.2) on macOS 13.4 Beta (22F5037d). 2. Notice how the first `<meter>`'s value isn't shown. 3. Try the same on Chrome, all three `<meter>`s' values are shown. The fix is to hide, then show the `<meter>`, or to populate the attributes statically, which may or may not be an option. This affects https://howfuguismybrowser.dev/.

Attachments
Safari (247.87 KB, image/png) 2023-04-25 01:33 PDT, Thomas Steiner	no flags	Details
reduction (253 bytes, text/html) 2023-04-25 12:40 PDT, Aditya Keerthi	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Thomas Steiner

Comment 1 2023-04-25 01:34:21 PDT

In my tests, this seems to only affect desktop Safari, it works fine on iOS.

Thomas Steiner

Comment 2 2023-04-25 01:39:32 PDT

See the screenshot for details: https://bugs.webkit.org/attachment.cgi?id=466071.

Anne van Kesteren

Comment 3 2023-04-25 02:37:53 PDT

Aditya, can you take a look?

Radar WebKit Bug Importer

Comment 4 2023-04-25 02:38:07 PDT

<rdar://problem/108495001>

Aditya Keerthi

Comment 5 2023-04-25 11:00:48 PDT

I'm unable to reproduce on https://like-spiffy-pick.glitch.me/, but can reproduce on https://howfuguismybrowser.dev/.

Aditya Keerthi

Comment 6 2023-04-25 12:40:24 PDT

Created attachment 466080 [details] reduction Attaching a reliable reproduction.

Aditya Keerthi

Comment 7 2023-04-25 15:49:33 PDT

Confirmed this is a regression in Safari 16.4. This also reproduces with <progress>, and is fallout from GPU Process refactoring work. We need to ensure our `ControlPart` state is up-to-date, probably in `RenderBox::ensureControlPart`.

Aditya Keerthi

Comment 8 2023-04-26 17:33:18 PDT

Pull request: https://github.com/WebKit/WebKit/pull/13218

EWS

Comment 9 2023-04-27 16:57:42 PDT

Committed 263473@main (340e63b309b7): <https://commits.webkit.org/263473@main> Reviewed commits have been landed. Closing PR #13218 and removing active labels.

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