Update WebKit testing to 26.x

[MikeMcC399]

What would you like?

Test Cypress with current WebKit 17.x 18.x 26.x instead of 16.0.

Why is this needed?

The current version of WebKit is 17.4 18.x 26.x.

CircleCI tests with WebKit 16.0 in

• system-tests-webkit
• driver-integration-tests-webkit

derived from playwright-webkit@1.24.2, released on July 29, 2022.

This is not representative of expected current usage of WebKit.

Other

The latest version of playwright is

1.45.3, released July 22, 2024

1.55.0, released Aug 20, 2025.

• WebKit 17.0 was introduced with Playwright 1.36 released on July 11, 2023
• WebKit 18.0 was introduced with Playwright 1.46 released on Aug 5, 2024
• WebKit 26.0 was introduced with Playwright 1.54 released on Jul 10, 2024
• Playwright 1.37 released on Aug 11, 2023, is the minimum version required to support Debian 12 used in previous Cypress Docker images.
• Playwright 1.45.0 released on Jun 25, 2024, with WebKit 17.4 is the minimum version required to support Ubuntu 24.04.
• Playwright 1.55.0 released on Aug 20, 2025, with WebKit 26.0 is the minimum version required to support Debian 13 used in Cypress Docker images.

[MikeMcC399]

• PR chore(webkit): update playwright-webkit to 1.45.3 #29955 submitted to address this issue

[MikeMcC399]

driver-integration-tests-webkit fails using playwright-webkit@1.45.3

• The failing test is packages/driver/cypress/e2e/commands/cookies.cy.js - see chore(webkit): update playwright-webkit to 1.45.3 #29955 (review)

This can be reproduced locally with

yarn
yarn workspace @packages/driver cypress:run --browser webkit --spec cypress/e2e/commands/cookies.cy.js

Testing with lower versions of playwright-webkit shows that the highest working version is playwright-webkit@1.34.3, which corresponds to the previous recommendation on the documentation site under WebKit (Experimental).

Version	Result	WebKit
1.24.2	pass	v16
1.34.3	pass	v16
1.35.1	pass (1)	v16
1.36.2	pass (1)	v17
1.37.1	fail	v17

• (1) opens Cypress runner after test completion - see #Issue with Github Actions not closing/finishing when testing with playwright-webkit (Safari) #27141

The cookies incompatibility to playwright-webkit 1.37.1 and later needs separate investigation.

[MikeMcC399]

• See WebKit 26 fails driver-integration-tests-webkit (cookies.cy.js) #29973 for details regarding test failures when attempting an upgrade

[MikeMcC399]

Updated to WebKit 18.0 because of release on Aug 5, 2024.

[MikeMcC399]

• Playwright 1.45.0 released on Jun 25, 2024, with WebKit 17.4 is the minimum version required to support Ubuntu 24.04. This version fails in Cypress CI tests - see WebKit 26 fails driver-integration-tests-webkit (cookies.cy.js) #29973 (comment).
• This issue is blocked until WebKit 26 fails driver-integration-tests-webkit (cookies.cy.js) #29973 is resolved