[webcontent] Can't open a PDF file after downloading it (from a Twitter link)

[julienw]

Site with issue and any steps to reproduce

1. Open https://twitter.com/boostmarks/status/1339490490471878658
2. Click on the PDF link
3. Click on "open the file" after it's been downloaded.

Expected behavior

=> The file is downloaded and can be opened in the PDF viewer.

Actual behavior

=> The file is downloaded.
=> I get an error that the file can't be opened.

When clicking on the notification for the download, the file can't be opened either, the error I get is "no application has been found for this file".

I can open the file when searching it from a File Manager app.
This also works fine in Chrome on Android, or Firefox on Desktop.

In Chrome I was unauthenticated on Twitter, so I also tried on Firefox/Android in private mode so that I'd be unauthenticated too, and I get the same problem.

Sorry I couldn't try with a link to a PDF file from another source than Twitter yet.

Does toggling Tracking Protection fix the issue? (Press the shield icon in the toolbar while on the site to see toggle)

No

Can you reproduce in Chrome (or other non-Mozilla browser)?

No.

Device information

• Android device: Samsung S10e
• Fenix version: Nightly 201216 17:01 (Build #2015781771) (Gecko version: 85, Gecko BuildID 20201214091023)

┆Issue is synchronized with this Jira Task

[JulianMH]

The same error occurs with this link: https://dev.esis.de/api/v9/ESISApp.php?f=PDF&id=TTT&token=5ff4418a050e08ja8cLMlJLJcJPNNXMGxPA&file=5ff44149ad633.pdf

Works fine on Firefox Desktop and Chrome.

Device Information

Android Version: 8.0.0
Android Device: HUAWEI P20 lite
Fenix Version: Nightly 210112 17:03

[drupol]

Hi,

Same issue when trying to download my CV from github: https://github.com/drupol/cv/releases/latest/download/cv.pdf

I tried with other browsers and I'm unable to reproduce the issue.

[Amejia481]

This issue will be addressed after mozilla-mobile/android-components#9558 lands

[stale]

See: #17373 This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[julienw]

I believe this works now.

[drupol]

Indeed, this is fixed, thanks!