1699761 - about:studies page is blank

Status: RESOLVED FIXED

(Firefox :: Nimbus Desktop Client, defect, P1)

Description

[Chris Peterson [:cpeterson]]

[Tracking Requested - why for this release]:

@ Kate, I think this bug is a regression from Nimbus event bug 1656568. I bisected this problem (using my daily profile) to this pushlog:

https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=316fdd5817ae62591d1c63f983ab608765096ce7&tochange=24b91deee352b75f7e1a387d5cf4f0a939a90bee

In my daily profile, my about:studies page is blank. View Source shows that the page's HTML is loaded, but nothing is rendered. I can't reproduce in a clean profile, so the problem seems to a side effect of some experiment I've been enrolled in.

My about:telemetry Experiment Data says I'm enrolled in the following experiments:

rollout-doh-nightly-rollout-to-all-us-desktop-users-nightly-74-80-bug-1613481.branch 	active
rollout-doh-nightly-rollout-to-all-us-desktop-users-nightly-74-80-bug-1613481.type 	normandy-prefrollout
rollout-doh-nightly-rollout-to-all-us-desktop-users-nightly-74-80-bug-1613481.enrollmentId 	f3157ac7-4f39-d64e-b734-07f6dd2b15a8
bug-1686593-pref-http3-on-nightly-nightly-86-88.branch 	http3-enabled-treatment
bug-1686593-pref-http3-on-nightly-nightly-86-88.type 	normandy-exp
bug-1686593-pref-http3-on-nightly-nightly-86-88.enrollmentId 	5443457b-ee29-ec4a-ad1b-45a2e855846c 

In the browser console, I see the following error every time I load about:studies:

debuggee 'resource://devtools/shared/base-loader.js:289' would run 2 builtin-modules.js:196:11

Comment 1

[Kate Hudson :k88hudson]

Thanks, we'll take a look

Comment 2

[Andrei Oprea [:andreio]]

Attachment: Bug 1699761 - Keep backwards compatibility with old recipe types

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/836bf3566093
Keep backwards compatibility with old recipe types r=k88hudson

Comment 4

[Natalia Csoregi [:nataliaCs]]

https://hg.mozilla.org/mozilla-central/rev/836bf3566093

Comment 5

[BugBot [:suhaib / :marco/ :calixte]]

The patch landed in nightly and beta is affected.
:andreio, is this bug important enough to require an uplift?
If not please set status_beta to wontfix.

For more information, please visit auto_nag documentation.

Comment 6

[Andrei Oprea [:andreio]]

Comment on attachment 9211741 [details]
Bug 1699761 - Keep backwards compatibility with old recipe types

Beta/Release Uplift Approval Request

• User impact if declined: about:studies page will be broken for users enrolled in older experiments
• Is this code covered by automated tests?: Yes
• Has the fix been verified in Nightly?: No
• Needs manual test from QE?: No
• If yes, steps to reproduce:
• List of other uplifts needed: None
• Risk to taking this patch: Low
• Why is the change risky/not risky? (and alternatives if risky): Covered by tests. Small change for backwards compatibility.
• String changes made/needed:

Comment 7

[Ryan VanderMeulen [:RyanVM]]

Comment on attachment 9211741 [details]
Bug 1699761 - Keep backwards compatibility with old recipe types

Approved for 88.0b5.

Comment 8

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/releases/mozilla-beta/rev/1eadbad8b288