1976489 - Search Highlight marks disappear in vertical scrollbar

Status: VERIFIED FIXED

(Toolkit :: Find Toolbar, defect)

Description

[FirefoxForever]

Attachment: 2025-07-09_16-31-31_firefox.mp4

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.0

Steps to reproduce:

1. Open the page https://github.com/tmux/tmux/blob/master/CHANGES.
2. Press Ctrl+F to open the "Find on Page" dialog. Enable the Highlight All" option, and clear all others (Match case, match diacritics, whole words).
3. Type the letter m into the find input.
4. Type the letter o.
5. Type the letter u.
   (I wanted to find all occurrences of "mouse").

Actual results:

After step 5 (entering the letter u), all highlight marks on the scrollbar disappear. The find dialog itself correctly reports a non-zero number of matches (e.g., "77 matches found"), but their locations are not indicated on the scrollbar.

Expected results:

After step 5, the scrollbar should display marks corresponding to the locations of the "mou" string on the page. The number of visible marks should reflect the number of matches found.

Comment 1

[BugBot [:suhaib / :marco]]

The severity field is not set for this bug.
:enndeakin, could you have a look please?

For more information, please visit BugBot documentation.

Comment 2

[Sergey Radionov]

Attachment: Bug 1992725 - Fixed missing selection marks on scroll bar for editors

and textarea as a particular case

Comment 3

[Sergey Radionov]

Attachment: Bug 1976489 - Fixed missing selection marks on scroll bar for editors

and textarea as a particular case

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/eab35c333ad5
https://hg.mozilla.org/integration/autoland/rev/0b8f8099a207
Fixed missing selection marks on scroll bar for editors r=NeilDeakin

Comment 5

[amarc]

https://hg.mozilla.org/mozilla-central/rev/0b8f8099a207

Comment 6

[Ardelean Oana, Desktop Test Engineering [:oardelean]]

Reproducible on a 2025-12-15 Firefox Nightly build on Windows 10.

Verified as fixed on Firefox Nightly 149.0a1 and Firefox 148.0b1 on Windows 10, macOS 15 and Ubuntu 22.