1253574 - Glitches while entering in fullscreen mode using “Page Fit” zoom level

Status: NEW

(Firefox :: PDF Viewer, defect, P3)

Description

[Vasilica Tamas, QA [:vtamas]]

[Affected versions]:
Firefox 47.0a1 (2016-03-03) with e10s disabled, 
Firefox 46.0a2 (2016-03-03) with e10s disabled, 
Firefox 45 beta 9 (20160223142613), 
Firefox 45.0 ESR (20160303135953) 
Firefox 38.7.0 ESR (20160302171452)


[Affected platforms]:
Ubuntu 14.04 34-bit
Windows 7 64-bit

[Steps to reproduce]:
1.Launch Firefox with clean profile.
2.Open a PDF file: http://cp.literature.agilent.com/litweb/pdf/5989-8139EN.pdf
3.Select “Page Fit” predefined zoom value.
4.Hit F11 keyboard button.

[Expected Results]:
The PDF file is successfully displayed in fullscreen mode, without any jerkiness or rendering issues.

[Actual Results]:
Visual glitches appear while entering in fullscreen mode.


[Additional notes]:
- This issue is not reproducible with e10s enabled on Firefox 47.0a1 (2016-03-03), Firefox 46.0a2 (2016-03-03) and Firefox 45 beta 9 (20160223142613). 
- I did not encounter this issue using the other zoom predefined values: “Actual Size”, “Automatic Zoom” and “Page Width".
- The glitches are also present in Firefox 20 (20130326150557) but they are not so visible, for which I consider that this issue is not a regression. 
- This issue is not reproducible on Mac OS X 10.9.5.

Comment 1

[Vasilica Tamas, QA [:vtamas]]

Tested also on Firefox 44.0.2 (20160210153822) under Windows 10 64-bit. This version is affected too.

Comment 2

[Marco Castelluccio [:marco]]

I wonder if fixing bug 1661253 would help here as well.