1907553 - [Rollout] Websites that had a fall back after 3 seconds don’t load instantly on the second attempt of navigation

Status: RESOLVED DUPLICATE of bug 1884921

(Core :: DOM: Security, defect)

Description

[Carmen Fat [:cfat] - Ecosystem QA, PTO until September 4th - NI to: [e-mail]]

Attachment: https_5sec_timeout.gif

[Affected versions]:

• Firefox Release 125.0.3 (Build #20240425211020)
• Firefox Release 126.0 (Build #20240509170740)
• Firefox Release 127.0.2 (Build #20240624183754)

[Affected Platforms]:

• Windows 10 x64
• macOS 14.4
• Ubuntu 22.04 x64

[Prerequisites]:

• Have the latest Firefox Release 128 installed.
• Have a browser profile enrolled in the HTTPS as default protocol rollout (https://experimenter.services.mozilla.com/nimbus/https-as-default-protocoll-in-address-bar/summary).

[Steps to reproduce]:

1. Open the browser from the prerequisites.
2. Navigate to the http://timeout.httpsonly.polar.onl/ website.
3. Open a new tab and navigate again to http://timeout.httpsonly.polar.onl/ website.
4. Observe the behavior.

[Expected result]:

• The website is instantly loaded when navigating to it the second time.

[Actual result]:

• The website has a timeout of 3 seconds until is loaded.

[Notes]:

• Attached is a screen recording of the issue.

Comment 1

[Malte Jürgens [:maltejur]]

This is a good observation, thank you! I indeed didn't think about Bug 1884921 only having landed in 128. For providing a consistent experience, I think I agree that we should move the rollout to only target 128.

Comment 2

[Frederik Braun [:freddy]]

We out to be changing the rollout to target Firefox 128 and above exclusively.