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Issue metadata

Status: WontFix
Owner: ----
Closed: Apr 2017
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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PDF viewer corrupts images when scrolling or zooming

Reported by reallyas...@gmail.com, Apr 13 2017

Issue description

UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.98 Safari/537.36

Example URL:
http://i11www.iti.uni-karlsruhe.de/_media/teaching/winter2016/ergebnisse.pdf

Steps to reproduce the problem:
1. Open the PDF in the link
2. Do one of these
  a. Scroll down until the diagram on page one is at least partly off the screen, then scroll up again until the diagram is visible again
  b. Zoom in or out using Ctrl + Mouse wheel or Ctrl + +/-

What is the expected behavior?
The diagram should be rendered normally.

What went wrong?
Instead of the diagram, a garbled image is shown (see the attached files). When zooming, the entire diagram is corrupted. If the diagram is scrolled only partly offscreen, only that part is corrupted. Reloading the page restores the correct diagram, but scrolling or zooming again will garble it again.

Does it occur on multiple sites: No

Is it a problem with a plugin? No 

Did this work before? N/A 

Does this work in other browsers? Yes

Chrome version: 57.0.2987.98  Channel: n/a
OS Version: Debian 9.0
Flash Version: None installed

Firefox and Evince from the Debian testing repositories render the PDF correctly.
 
normal.png
138 KB View Download
afterscrolling.png
150 KB View Download
afterpartlyscolling.png
144 KB View Download
afterzooming.png
163 KB View Download
I am attaching chrome://gpu
chrome___gpu.pdf
96.8 KB Download
Labels: Needs-Triage-M57
Components: Internals>Plugins>PDF
Labels: -Type-Compat -Needs-Triage-M57 Type-Bug
I can't reproduce this on Linux here with the current stable release, which is 58.0.3029.81. Can you relaunch Chrome with --disable-gpu and see if that makes a difference, if you suspect it's GPU acceleration related?
I just upgraded to version 58.0.3029.81 from the Debian unstable repositories, and the bug did not appear. After downgrading to version 57, the bug reappeared, so I conclude that it is already fixed. I'm sorry for not testing with the current version before opening an issue.
Status: WontFix (was: Unconfirmed)
Glad to hear it's working in the latest stable release. No worries.

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