1721246 - Search finds text in <semantics> elements but doesn't mark it

Status: NEW

(Toolkit :: Find Toolbar, defect, P5)

Description

[Marcel]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0

Steps to reproduce:

1. Go to https://de.wikipedia.org/wiki/Spin
2. Press Ctrl + F
3. Try to find the word "down"

Tested with Firefox 78.11esr, Firefox 90 and current Nightly, on Windows and Linux.

Actual results:

Firefox does find the word over 100 times, but doesn't mark them and doesn't jump to it.

Expected results:

Firefox should mark and jump to the found word on the page.

Note: it only works with with the word "down", searching other words works fine

Comment 1

[BugBot [:suhaib / :marco]]

The Bugbug bot thinks this bug should belong to the 'Toolkit::Find Toolbar' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Comment 2

[Marcel]

Still present on Firefox Nightly 93.0a1 (2021-08-12)

Comment 3

[Marcel]

Just tried all versions and found out that the bug was introduced with a commit between the Nightly build 2013-05-11 and 2013-05-12.
I hope this helps.

Works well in version
17.0.9 ESR
22.0
23.0a1 (2013-05-11)

Bug appears in version
23.0a1 (2013-05-12)
23.0 beta 1
23.0
91.1 ESR
92.0
94.0a1 (2021-09-16)

Comment 4

[Marcel]

Regression range:
https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=179e29a23c56&tochange=d68224f5325b

I think the regression was introduced with commit 9354202c68f072a2b7252e18379e1aae2b129777 by fixing Bug 745131.
Because the find toolbar is able to find text in <semantics> elements, but doesn't mark them.