1244549 - [e10s][APZ] dragging the scrollbar doesn't follow the mouse movements and page moves up and down

Status: RESOLVED FIXED

(Core :: Panning and Zooming, defect)

Description

[Alice0775 White]

See mozillazine post : http://forums.mozillazine.org/viewtopic.php?p=14496365#p14496365

Nightly 31-01-16, STR:
Create new profile, launch Nightly, make sure e10s and APZ are enabled, open new tab, go to https://wiki.mozilla.org/Electrolysis and https://wiki.mozilla.org/Electrolysis. For some reason the scrollbar doesn't follow the mouse movements and moves up and down. If I try to do the same thing on http://www.gamemag.ru, the scroll goes crazy

Steps To Reproduce:
1. e10s and APZ are enabled
2. Open https://wiki.mozilla.org/Electrolysis
3. https://wiki.mozilla.org/Electrolysis

Actual Results:
the scroll goes crazy.
scrollbar doesn't follow the mouse movements and page moves up and down.

Expected Results:
Not so.

Regression Window:
https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=bdecb787f1a2c12be5f0059afe214868402d2479&tochange=6ccda47f18b38e0a16564a339a0229133191549c

Regressed by: Bug 1242690

Comment 1

[Alice0775 White]

Oops,
> 3. https://wiki.mozilla.org/Electrolysis

3. Drag the thumb of scrollbar

Comment 2

[Alice0775 White]

Also reproduce on the following pages
https://developer.mozilla.org/en-US/Add-ons/Code_snippets
https://twitter.com/FxSiteCompat

Comment 3

[Kartikaya Gupta (email:[e-mail])]

Backed out the three patches from bug 1242690 since this seems pretty bad.

https://hg.mozilla.org/integration/mozilla-inbound/rev/a49bae84297c

Comment 5

[johngraciliano]

It appears to be fixed in 47.0a1 (2016-02-01).

Comment 6

[Kartikaya Gupta (email:[e-mail])]

Thanks. The backout landed on m-c in https://hg.mozilla.org/mozilla-central/rev/a49bae84297c