1254354 - Pinterest may have issue with CSS, there is a lag seen with page loading

Status: NEW

(Core :: CSS Parsing and Computation, defect)

Description

[Michelle Funches - QA]

Attachment: pinterest.mp4

1) Start Firefox Dev Ed with a clean profile
2) Access https://www.pinterest.com/
Observe: There is lag with page loading correctly.
Collaborations seem to suggest there is a CSS lag
Please see attached mp4 file demonstrating the error
E10s specific: NO, occurs when multi-process is enabled or disabled
Only occurs first time on clean profile.

Comment 1

[David Baron :dbaron: (⌚️UTC-5, no longer working on Mozilla)]

Trying to play the video says the file is corrupt.

Is this a regression?

Comment 2

[Michelle Funches - QA]

Attachment: pinterest video.avi

Comment 3

[Michelle Funches - QA]

Hi David, I attached a new file can you please try with Windows Media Player, also Yes, this a part of the Regression testing

Comment 4

[Andrew Overholt [:overholt]]

Attachment: Pinterest FOUC

Is this just a flash of unstyled content? Could it be network (or Pinterest CDN)-related? Can you make it happen regardless of network, Michelle?

Comment 6

[Kanchan Kumari QA]

I couldn't reproduce this issue on Windows 7, 8.1 & 10 with Firefox 49, 50, 51.0b1, 52.0a2, and 53.0a1.
Tested with fresh profile, e10s on or off.