1835261 - Tofu boxes are shown for the Thaana language if font visibility is set to 1 or 2

Status: RESOLVED WORKSFORME

(Core :: Layout: Text and Fonts, defect)

Description

[Simona Badau, Desktop QA]

Attachment: Screenshot with the issue

Found in

• Nighty 115.0a1

Affected versions

• Nightly 115.0a1

Tested platforms

• Affected platforms: macOS 11.7, macOS 12

Preconditions

• in about:config, set the preference "layout.css.font-visibility.private" to 1.

Steps to reproduce

1. Open a private window.
2. Navigate to Wikipedia and look for Thaana language.
3. Observe the page.

Expected result

• The Thaana characters should be properly displayed in Private Browsing.

Actual result
During private browsing - tofu boxes are displayed instead of the Thaana characters.

Regression range
This is not a regression, the font visibility preference is set to 3 on all previous versions: ESR, Beta, and Release.

Additional notes

• The tofu boxes are also displayed when the preference "layout.css.font-visibility.private" is set to 2.
• The tofu boxes are not displayed in normal browsing or when "layout.css.font-visibility.private" is set to 3.

Comment 1

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

:sbadau, if you think that's a regression, could you try to find a regression range using for example mozregression?

Comment 2

[Simona Badau, Desktop QA]

This issue is no longer reproducible after the landing of Bug 1835271 - there are no tofu boxes displayed in the latest Nightly 116.0a1 on macOS 11.7 macOS 12 and macOS 13.

Comment 3

[Simona Badau, Desktop QA]

Based on Comment 2, closing this as Resolved Worksforme.