782222 - Black or white square is displayed when downloading pdf files

Status: RESOLVED WORKSFORME

(Firefox :: Downloads Panel, defect)

Description

[Simona Badau, Desktop QA]

Mozilla/5.0 (Windows NT 6.1; rv:17.0) Gecko/17.0 Firefox/17.0

On Windows, when downloading pdf files - a square is displayed in the proximity of the Download Indicator. 

Reproducible: always

Steps to reproduce:
1. Launch Firefox and start downloading some pdf files

Expected results:
No squares (black or white) are displayed near the Download Indicator.

Actual results:
A white or a black square is displayed near the Download Indicator when the download is complete. 
Please see the screen cast for more details: http://screencast.com/t/iqRJ8o1A

Comment 1

[david.smitmanis]

To clarify: this doesn't happen when downloading pdf-files per se, but when you have a pdf reader embedded in your browsing area.

Issue doesn't seem to happen with the built in pdf previewer, but it does happen with Adobe Reader in-browser

Comment 2

[Mike Conley (:mconley) (:⚙️)]

General question - how important is this bug, given that we're attempting to ship an inline-PDF viewer targeted for Firefox 18?

I should note that this doesn't seem to be a general problem for other plugins. I couldn't reproduce with the Flash plugin, for example.

Comment 3

[Marco Bonardo [:mak]]

I don't think it's blocker cause it happens only on certain plug-ins (it may also be platform dependent). The PDF case is likely the most common plug-in you would save from, and as you said pdf.js is going to be shipped by default and won't have issues.
This is likely a platform bug, but I suspect it may be complicated and forcing us to do something like disable the animation for certain kind of content.

Comment 4

[Dana Lucaci, Desktop QA]

This issue is not reproducible anymore using the latest Firefox 123.0 build on Win 10, no squares (black or white) are displayed near the Download Indicator. I'm closing it as WFM.