1232184 - [e10s+APZ] Flash plugin windows flicker on and off when I turn the mouse wheel even though the page is not actually scroll

Status: RESOLVED DUPLICATE of bug 1193055

(Core :: Layout, defect)

Description

[Alice0775 White]

Attachment: choudanse7.swf

After landing Bug 1137944, a bad effect appears.
it is worse than before landing it.

Steps to reproduce:
1. Open url or attachment
2 [review]. Turn mouse wheel

Actual Results:
Flash plugin windows flicker on and off

Actual Results:
Should not flicker,

Regression window:
https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=2a51d8766dfbfd272518ab3a47d2ca5f452dc971&tochange=e1e281f04f27

Regressed by Bug 1137944

Comment 1

[Alice0775 White]

Attachment: WheelTest.swf

another testcase:
STR
1. Open attached
2. Turn mouse wheel

Actual Results:
Flash plugin windows flicker on and off.
Mouse wheel event does not count

Expected Results:
Mouse wheel event should count.

Comment 2

[Alice0775 White]

another testcase:
STR
1. Open WheelTest.swf (notwork on local file system)
2. Turn mouse wheel 

Actual Results:
Mouse wheel event does not count while the flash object is hidden

Expected Results:
Mouse wheel event should count continuously .

Comment 3

[Jim Mathies [:jimm]]

I don't see any flickering in WheelTest.swf. The flash applet does appear to have an issue with picking up mouse wheel events though. Potentially a bug in nsGfxScrollFrame which hides plugin windows as a result of scroll events.

Comment 4

[Alice0775 White]

Disappears WheelTest.swf while rotating the wheel.
And event count is increased only one instead number of wheel tick.

Comment 5

[Jim Mathies [:jimm]]

This is currently apz specific, which is interesting. DOM scroll doesn't trigger it.

Comment 6

[Jim Mathies [:jimm]]

I think the fix for bug 1193055 will address this assuming apz knows if a content page is scrollable.

Comment 7

[Jim Mathies [:jimm]]

fixed by bug 1193055