1811662 - Text display problem in MacOS Ventura

Status: RESOLVED INCOMPLETE

(Core :: Layout, defect)

Description

[gen.genesis00]

Attachment: IMG_3768.JPG

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36

Steps to reproduce:

After update to MacOS Ventura, their are Text encoding problem. Not all of the TEXT display incorrectly, just part of them. Check this two page for example.
https://dvdfab.org/promotion.htm?trackid=headbanner2
https://space.bilibili.com/730732/video?tid=0&keyword=&order=pubdate

Actual results:

The text became "?"

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Layout' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Daniel Holbert [:dholbert]]

Thanks for the report, and sorry to hear about the issue.

I've got MacOS Ventura (13.2) and I'm unable to reproduce the issue locally, using latest Firefox 109.0.1 . I'm looking at your first "dvdfab" link -- your photo seems to be the top section there (the part showing original-price 52440). I'm not seeing any missing characters when I look at that section.

For me, the text that does show up in your photo (無期限) is rendered with the site-provided font Quicksand. But the rest of the text (the text that's missing in your photo) is rendered for me with Osaka, which I have as a system font. That Osaka font usage comes from this CSS rule on the site, which requests it by name:

.lang-ja, .lang-ja * {
  font-family: メイリオ,Meiryo,ヒラギノ角ゴ,游ゴシック Medium,游ゴシック,ＭＳ ゴシック,游明朝,ヒラギノ明朝,
Osaka,Times New Roman,Arial;

If I edit that rule to remove Osaka from the list, then I see the text rendered in a mix of Times New Roman (for Latin characters) and Hiragino Kaku Gothic ProN (for CJK characters) instead.

A few questions to help narrow down what might be causing the problem:
(1) What version of Firefox are you seeing the issue in?
(2) Do you know if you have any locally-installed fonts? We do sometimes see issues with conflicts between user-installed fonts and system fonts -- see bug 1803406.
(3) Could you see if you can tell what font the missing characters are trying to use? (using Firefox's devtools -- see below)

To answer question (3), here's what you do:
(a) right-click one the missing characters and choose "Inspect"
(b) on the right side of the developer tools pane that pops up, where it says "Layout|Computed|...", choose "Fonts" (the Fonts entry might be hidden in a little downarrow-icon-menu at the right edge of that Layout|Computed|... header-bar)
(c) This should tell you "Fonts Used: [something]" for whatever text that you right-clicked on.

Thanks!

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

A needinfo is requested from the reporter, however, the reporter is inactive on Bugzilla. Given that the bug is still UNCONFIRMED, closing the bug as incomplete.

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