1551065 - Quora freezes on the latest nightly (2019-05-11)

Status: RESOLVED FIXED

(Core :: Layout, defect, P1)

Description

[jjjudas]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Firefox/68.0

Steps to reproduce:

Go to www.quora.com

Actual results:

No links can be clicked, when you leave the tab and return to it, it is displaying the loading animation instead of content.

Expected results:

The website should be readable as normal.

I have tried to do the same with the same account in a different browser (MS edge) to rule out a problem in quora, and it works normally there

Comment 1

[jjjudas]

I have also tested it on the regular firefox (67.0b19) and it works there so it really has to be in the latest nightly. I am also pretty sure it worked normally in yesterday's nightly.

Comment 2

[Alice0775 White]

Steps to reproduce:

1. Go to www.quora.com
2. Log-in

Actual Results:
The page is forever loading
No links can be clicked

Regression window:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=d94d1e2c6f436c33725709bf93c99f6930fd8e99&tochange=c2250a23fd66e3c812cb023c2d12f6f5e8d5a2f2

Regressed by:
c2250a23fd66e3c812cb023c2d12f6f5e8d5a2f2 Cameron McCormack — Bug 866102 - Implement -webkit-line-clamp. r=mats,emilio,dholbert

Cameron,
Your patch seems to cause the regression. Can you look into this?

Comment 3

[Emilio Cobos Álvarez (:emilio)]

[Tracking Requested - why for this release]: Pretty bad regression in a popular site.

Comment 4

[Emilio Cobos Álvarez (:emilio)]

Attachment: Bug 1551065 - Properly discard empty lines for -webkit-line-clamp. r=heycam

That being said, this code is clearly not getting hit, are we 100% sure that
this is interoperable with what WebKit / Blink do?

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/430b79a1444f
Properly discard empty lines for -webkit-line-clamp. r=heycam

Comment 7

[alklein2112]

(In reply to jjjudas from comment #0)

I have tried to do the same with the same account in a different browser (MS edge) to rule out a problem in quora, and it works normally there

It works normally AT THE SAME TIME ON THE SAME COMPUTER in the stable. (But due to the Windows change, the stable no longer does sound in YouTube - so sound or quora, not both).

Comment 8

[Andreea Pavel [:apavel]]

https://hg.mozilla.org/mozilla-central/rev/430b79a1444f

Comment 9

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Created web-platform-tests PR https://github.com/web-platform-tests/wpt/pull/16881 for changes under testing/web-platform/tests

Comment 10

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Upstream PR merged