8368572: Update WebKit to 623.1

[johanvos]

Hi all,

This pull request contains a backport of commit 422d3a95 from the openjdk/jfx repository.

The commit being backported was authored by Hima Bindu Meda on 21 Jan 2026 and was reviewed by Kevin Rushforth, Joeri Sykora and Johan Vos.

Thanks!

---

Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8368572 needs maintainer approval

Issue

• JDK-8368572: Update WebKit to 623.1 (Bug - P2 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jfx17u.git pull/253/head:pull/253
$ git checkout pull/253

Update a local copy of the PR:
$ git checkout pull/253
$ git pull https://git.openjdk.org/jfx17u.git pull/253/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 253

View PR using the GUI difftool:
$ git pr show -t 253

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jfx17u/pull/253.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back jvos! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

⚠️ @johanvos This backport pull request is too large to be automatically evaluated as clean.

[mlbridge]

Webrevs

• 00: [Full](Webrev is not available because diff is too large) (ef46b2b7)

[openjdk]

@johanvos this pull request can not be integrated into master due to one or more merge conflicts. To resolve these merge conflicts and update this pull request you can run the following commands in the local repository for your personal fork:

git checkout backport-johanvos-422d3a95-master
git fetch https://git.openjdk.org/jfx17u.git master
git merge FETCH_HEAD
# resolve conflicts and follow the instructions given by git merge
git commit -m "Merge master"
git push

[bridgekeeper]

@johanvos This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply issue a /touch or /keepalive command to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!