754520 - xul menulist scroll amount is very little with mouse wheel if mouse pointer move at the same time when general.smoothScroll = true

Status: RESOLVED INCOMPLETE

(Core :: Web Painting, defect)

Description

[Alice0775 White]

Build Identifier:
http://hg.mozilla.org/mozilla-central/rev/d37d4edce6dd
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/15.0 Firefox/15.0a1 ID:20120510145529

xul menulist scroll amount is very little with mouse wheel if mouse pointer move at the same time when general.smoothScroll = true.
This is similar to Bug 754196 but that is html element and regression range is also different.
Maybe this is same cause of Bug 590082.


Reproducible: Always

Steps to Reproduce:
1. Set general.smoothScroll to true
2. Open Content Options (Tools > Options > Content OR Edit > Preferences > Content)
3. Open drop down list of "Default font"
4. Try to scroll the list with mouse wheel and move mouse pointer at the same time

 
Actual Results:
  scroll amount is very little

Expected Results:
  should scroll as usually

Regression window(m-c)
Works:
http://hg.mozilla.org/mozilla-central/rev/b94cf8147ccd
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a1pre) Gecko/20100111 Minefield/3.7a1pre ID:20100111140136
Fails:
http://hg.mozilla.org/mozilla-central/rev/47cd92d616d7
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a1pre) Gecko/20100111 Minefield/3.7a1pre ID:20100111150802
Pushlog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=b94cf8147ccd&tochange=47cd92d616d7

Comment 1

[roxleitan]

20160502172042 Mozilla/5.0 (Windows NT 6.1; rv:46.0) Gecko/20100101 Firefox/46.0
20160605030215 Mozilla/5.0 (Windows NT 6.1; rv:49.0) Gecko/20100101 Firefox/49.0

I have tested your issue on latest FF release 46.0.1 and latest Nightly build and could not reproduce it.
Is this still reproducible on your end ? If yes, can you please retest this using latest FF release and latest Nightly build (https://nightly.mozilla.org/) and report back the results ? When doing this, please use a new clean Firefox profile, maybe even safe mode, to eliminate custom settings as a possible cause (https://goo.gl/PNe90E).

Comment 2

[Alice0775 White]

No