820915 - Browser and jquery almost hang on certain site if minimum font size set

Status: RESOLVED INVALID

(Core :: General, defect)

Description

[Alice0775 White]

http://hg.mozilla.org/mozilla-central/rev/634180132e68
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:20.0) Gecko/20121212 Firefox/20.0 ID:20121212034329


Steps to reproduce

1. minimum font size set
   user_pref("font.minimum-size.x-western", 18);
2. Open http://academic.research.microsoft.com/
   And search any words
   (direct link http://academic.research.microsoft.com/Search?query=database )

Actual results:
Browser almost hang.
And slow script warning dialog pops up

A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.

Script: http://ajax.microsoft.com/ajax/jQuery/jquery-1.4.2.min.js:114

Expected results:
Loading immediately

Comment 1

[Alice0775 White]

Regression window(m-c)
Good:
http://hg.mozilla.org/mozilla-central/rev/561771f01881
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:13.0a1) Gecko/13.0a1 Firefox/13.0a1 ID:20120219202749
Bad:
http://hg.mozilla.org/mozilla-central/rev/b8e7474374d5
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:13.0a1) Gecko/13.0a1 Firefox/13.0a1 ID:20120220040949
Pushlog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=561771f01881&tochange=b8e7474374d5


Regression window(m-i)
Good:
http://hg.mozilla.org/integration/mozilla-inbound/rev/bab2083815b7
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:13.0a1) Gecko/13.0a1 Firefox/13.0a1 ID:20120218085754
Bad:
http://hg.mozilla.org/integration/mozilla-inbound/rev/8bdb4c87ad78
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:13.0a1) Gecko/13.0a1 Firefox/13.0a1 ID:20120218132954
Pushlog:
http://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=bab2083815b7&tochange=8bdb4c87ad78

Suspected: Bug 416581

Comment 2

[Alice0775 White]

I can reproduce in the build before landing Bug 416581,  if minimum font size set in your default language, i.e. user_pref("font.minimum-size.ja", 18);
So Bug 416581 is false positive.

Comment 3

[Mike Taylor [:miketaylr]]

Alice0775, does this still repro for you?

Comment 4

[Alice0775 White]

I can still reproduce the hang on latest Nightly50.0a1[1].

[1]
https://hg.mozilla.org/mozilla-central/rev/cde56ead650fd302be1d440507485b9abf7c163a
Mozilla/5.0 (Windows NT 10.0; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0 ID:20160718081125

I think this is JQuery and/or the site problem.
I make this INVALID.