1779536 - The page goes blank shortly after accessing tripadvisor.com in Private mode

Status: VERIFIED FIXED

(Core :: Privacy: Anti-Tracking, defect, P3)

Description

[Calin Tanase]

Attachment: tripadvisor.png

Environment:
Operating system: Windows 10
Firefox version: Nightly 104.0a1 (2022-07-13) (64-bit)

Preconditions:
Private window opened

Steps to reproduce:

1. Go to: https://www.tripadvisor.com
2. Observe the page

Expected Behavior:
The page loads correctly.

Actual Behavior:
The page goes blank shortly after accessing the website.

Notes:

1. Screenshot provided
2. Reproducible in Private mode regardless of ETP status
3. Not reproducible in Normal mode regardless of ETP status
4. Not reproducible on Chrome Incognito mode

Comment 1

[Tim Huang[:timhuang]]

According to the console message, this is related to miss indexedDB interface in PBM.

Tom, do we have a meta bug for such bugs? Thanks.

Comment 2

[Thomas Wisniewski [:twisniewski]]

We do, bug 1773110 (alias tp-pbm-missing-api-breakage). I'll see if it's feasible to shim this away by defining indexedDB for this site, which I imagine is true as we had it defined before bug 1776109. krosylight, you might be interested in this as well.

Comment 3

[Thomas Wisniewski [:twisniewski]]

Yes, I can tweak our Firebase shim slightly to support this case as well, so it's not tricky to fix.

Comment 4

[Kagami Rosylight [:saschanaz] (they/them)]

Hmm, at this point I wonder we should implement the firebase shim from DOM part. Hiding IndexedDB interfaces have largely failed with libraries accessing the interface prototypes and now hiding window.indexedDB also causes failure (although it did help bug 1767270).

For now I'd like to see how many breakages are because of lacking window.indexedDB before going further.

Comment 5

[Thomas Wisniewski [:twisniewski]]

Alright, but if you feel I should specifically shim a fix for TripAdvisor while we investigate further, I have a simple patch ready to do so.

Comment 6

[Thomas Wisniewski [:twisniewski]]

I just landed a shim for this in bug 1771783, which should ship with the 104 release.

Comment 7

[Alexandru Trif, Desktop Test Engineering [:atrif]]

Reproduced the issue with Firefox 104.0a1 (2022-07-13) on Windows 10x64. A blank page is displayed when loading the https://www.tripadvisor.com website in a Private window.
The issue si verified fixed with Firefox 104.0b5 (20220802185803) on Windows 10x64, macOS 11 and Ubuntu 21. The https://www.tripadvisor.com is loaded as expected in a private window.