1726153 - Icons in PDF are rendered with scanlines

Status: RESOLVED DUPLICATE of bug 1269455

(Firefox :: PDF Viewer, defect)

Description

[Catalin Sasca, Desktop Test Engineering [:csasca]]

Attachment: pdf rendering.webm

Affected versions

• Firefox 91.0.1
• Firefox 92.0b4
• Firefox 93.0a1

Affected platforms

• Ubuntu 20.04
• macOS 12.0 beta
• Windows 10

Steps to reproduce

1. Launch Firefox
2. Access this PDF Sample
3. Scroll down to "Introduction" and zoom in on the blue icon

Expected result

• The icon is rendered correctly in PDF

Actual result

• The icon is rendered with scanlines

Regression range

• Will see for a regression.

Additional notes

• The issue can be seen in the attachment.

Comment 1

[Daniel Bodea [:danibodea]]

This issue does not appear to be a regression considering the fact that it occurs in Nightly as old as v85.0a1 and v65.0a1 or even v45.0a1.

Comment 2

[Kenan]

Attachment: 1726153pdf_simplified.pdf

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:97.0) Gecko/20100101 Firefox/97.0

I can confirm this bug. The Icons are set up by multiple images with 1px height.

This bug is a duplicate of https://bugzilla.mozilla.org/show_bug.cgi?id=1164550