1305736 - [Ubuntu] Glitch appears when going on/off Fullscreen mode

Status: RESOLVED DUPLICATE of bug 1233073

(Core :: Layout, defect)

Description

[Ciprian Georgiu, Desktop QA]

[Notes]:
- see also bug 1302071

[Affected versions]:
- latest Nightly 52.0a1 (2016-09-27)
- latest Aurora 51.0a2 (2016-09-27)
- Firefox Beta 50.0b2 (20160926162149)
- Firefox 49.0.1 (20160922113459)

[Affected platforms]:
- Ubuntu 16.04 LTS, x64

[Steps to reproduce]:
1. Launch Firefox
2. Go to this *webm video file: http://techslides.com/demos/sample-videos/small.webm
3. Press Fullscreen, exit Fullscreen several times

[Expected result]:
- Going on and off Full screen is smooth, with no lags.

[Actual result]:
- There are lags while going on/off Full screen mode.

[Regression range]:
- I will investigate for a regression range ASAP.

[Additional notes]:
- On Chrome it's instant
- It happens with ESC, Exit Full screen (Esc) notification on top of the video and double click on the video. 
- On Ubuntu 12.04 LTS x86 there is also visible lagging 
      Screencast showing the issue on Ubuntu 16.04 LTS x64: https://drive.google.com/file/d/0B-B8HwBlbdDXMzZXNlZlSGxUUDg/view?usp=sharing

Comment 1

[Ciprian Georgiu, Desktop QA]

bug 1302071

Comment 2

[Carmen]

I investigated the glitches issue on Nightly builds and I came up with following results: 

Last good revision: b0b3dcfa5557 (2015-07-24)
First bad revision: d3228c82badd (2015-07-25)

Pushlog:
https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=b0b3dcfa5557&tochange=d3228c82badd

If you have any questions, please let me know.