886119 - User agent in iframes are incorrect when using "Request Desktop Site"

Status: RESOLVED INCOMPLETE

(Firefox for Android Graveyard :: General, defect, P2)

Description

[Law, Cheuk-wing]

Attachment: testcase

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:21.0) Gecko/20100101 Firefox/21.0 Iceweasel/21.0 (Beta/Release)
Build ID: 20130515142945

Steps to reproduce:

1) Upload the attached testcase to a web server with PHP support
2) Launch Firefox for Android
3) Enable "Request Desktop Site"
4) Navigate to the testcase


Actual results:

The two displayed user agents are different.
Outside the iframe: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Firefox/24.0
Inside the iframe: Mozilla/5.0 (Android; Tablet; rv:24.0) Gecko/24.0 Firefox/24.0


Expected results:

The two displayed user agents should be the same.

Comment 2

[Jonathan Almeida [:jonalmeida]]

Attachment: Screen Shot 2018-09-13 at 12.51.10 PM.png

Some repro steps while using Github:
1. Go to a user profile page on Github (https://github.com/torvalds)
2. Request desktop mode and observe that the page is now showing the contribution chart.
2. Click on one of the green boxes in the contribution chart.
4. Observe that the page reloads the iframe below it to have a mobile version of the account instead.


See attached screenshot.

Comment 3

[Chris Peterson [:cpeterson]]

This is a longstanding Fennec bug but is also affects Focus+GV and FxR.

Comment 4

[BMO Automation]

We have completed our launch of our new Firefox on Android. The development of the new versions use GitHub for issue tracking. If the bug report still reproduces in a current version of [Firefox on Android nightly](https://play.google.com/store/apps/details?id=org.mozilla.fenix) an issue can be reported at the [Fenix GitHub project](https://github.com/mozilla-mobile/fenix/). If you want to discuss your report please use [Mozilla's chat](https://wiki.mozilla.org/Matrix#Connect_to_Matrix) server https://chat.mozilla.org and join the [#fenix](https://chat.mozilla.org/#/room/#fenix:mozilla.org) channel.