631872 - Flash plugin Youtube player steal mouse wheel scroll focus when mouse cursor is outside the plugin area

Status: RESOLVED FIXED

(Core :: Widget, defect, major)

Description

[kolubinowicki]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; rv:2.0b12pre) Gecko/20110205 Firefox/4.0b12pre
Build Identifier: Mozilla/5.0 (Windows NT 6.1; rv:2.0b12pre) Gecko/20110205 Firefox/4.0b12pre

Flash plugin steal a mouse scroll focus, scrolling attempt by mouse wheel (outside the flash plugin!) is broken, the only alternative to scroll is to use scroll bar or switch to other tab and back. This is regression from few past nightly builds. 

Reproducible: Always

Steps to Reproduce:
1.Go to a any page with embedded Youtube player like:
http://www.kuriositas.com/2010/07/guedelon-castle-new-medieval-chateau.html
2.Click play video
3.Try scrolling using mouse wheel, outside the plugin area
Actual Results:  
Flash plugin steal a focus, scrolling attempt by mouse wheel (outside the flash plugin!) is broken, the only alternative to scroll is to use scroll bar or switch to other tab and back.

Expected Results:  
Scrolling should work when mouse pointer is outside the plugin area

(Bug 483136 describe stealing mouse wheel scrolling focus over flash plugin area)

Comment 1

[Alice0775 White]

Steps to Reproduce:
1.Go to a any page with embedded Youtube player like:
http://www.kuriositas.com/2010/07/guedelon-castle-new-medieval-chateau.html
2.Click play video
3.Click outside the plugin area
4.Try scrolling using mouse wheel, outside the plugin area

Actual Results:  
 The page does not scroll

Expected Results:  
 The page should scroll

Regression window
Works:
http://hg.mozilla.org/mozilla-central/rev/019e47cc11e2
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b12pre) Gecko/20110203
Firefox/4.0b12pre ID:20110203165107
Fails:
http://hg.mozilla.org/mozilla-central/rev/ed958cdc8396
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b12pre) Gecko/20110203
Firefox/4.0b12pre ID:20110203201757
Pushlog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=019e47cc11e2&tochange=ed958cdc8396

Comment 2

[Jim Mathies [:jimm]]

reported fixed in bug 628872 by a backout.