Black or white square is displayed when downloading pdf files




Downloads Panel
6 years ago
6 years ago


(Reporter: alindeac, Unassigned)


(Blocks: 1 bug)

Windows 7

Firefox Tracking Flags

(Not tracked)


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:


6 years ago
Blocks: 726447

Comment 1

6 years ago
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
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.
Flags: needinfo?(mak77)
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.
Flags: needinfo?(mak77)
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