Twenty Nineteen - Details block having issue wih font-size in editor.

[nidhidhandhukiya]

Steps to reproduce the issue :-

1. Use Twenty Nineteen theme.
2. Choose Details block.
3. Apply font-size from the details block.

Now check both the side editor and front.
You can able to see changes in front side for the both hidden and visible text.

But, in editor the font-size is changed for the visible text and choosen font-size is not working for the hidden text in editor.

I have attached video for better understanding.
Video URL :- ​https://www.awesomescreenshot.com/video/33886583?key=f3ebaaaf01274960545fdb5b401d1007

[sainathpoojary]

Reproduction Report

Description

This report validates whether the issue can be reproduced.

Environment

• WordPress: 6.8-alpha-59422
• PHP: 8.2.25
• Server: Apache/2.4.62 (Debian)
• Database: mysqli (Server: 11.4.4-MariaDB-ubu2404 / Client: mysqlnd 8.2.25)
• Browser: Chrome 131.0.0.0
• OS: macOS
• Theme: Twenty Nineteen 3.0
• MU Plugins: None
• Plugins: Gutenberg 19.7.0

Actual Results

1. ✅ I was able to reproduce the issue, where the font size applied to the Details block reflects correctly on the front end but does not apply to the hidden text in the editor in Twenty Nineteen theme.

Supplemental Artifacts

[sainathpoojary]

Test Report

Description

This report validates whether the indicated patch works as expected.

Patch tested: https://core.trac.wordpress.org/attachment/ticket/62514/62514.patch

Environment

• WordPress: 6.8-alpha-59274-src
• PHP: 8.2.25
• Server: nginx/1.27.2
• Database: mysqli (Server: 8.0.40 / Client: mysqlnd 8.2.25)
• Browser: Chrome 131.0.0.0
• OS: macOS
• Theme: Twenty Seventeen 3.8
• MU Plugins: None activated
• Plugins: Test Reports 1.2.0

Actual Results

1. ✅ Issue resolved with patch.

Supplemental Artifacts

[desrosj]

Removing version because this was not introduced in 6.7.1. Version should represent the first version of WordPress where a bug can be found.

[sabernhardt]

We are already tracking this issue in #60880 (for paragraphs in any parent block).