709922234 Reporter
	Description • 8 years ago

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:40.0) Gecko/20100101 Firefox/40.1
Build ID: 20160525063710

Steps to reproduce:

https://www.youtube.com/watch?v=LpykAX3-1Z4
http://codepen.io/mantou132/pen/aZoxLE


Actual results:

Mouse wheel  can't scroll background

	Liviu Cirdei
	Comment 1 • 8 years ago

User Agent  Mozilla/5.0 (X11; Linux x86_64; rv:46.0) Gecko/20100101 Firefox/46.0
Build ID  20160502172042
Version  46.0.1

I could not reproduce the issue on the current release (46.0.1) or latest Nightly (49.0a1). Could you install the latest Firefox release (https://www.mozilla.org/en-US/firefox/new/) and retry?

If still reproducible on your side, please check with a new profile (https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles) and/or Firefox Safe Mode (https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode).

	709922234 Reporter
	Comment 2 • 8 years ago

(In reply to Liviu Cirdei [:liviucirdei] from comment #1)
> User Agent  Mozilla/5.0 (X11; Linux x86_64; rv:46.0) Gecko/20100101
> Firefox/46.0
> Build ID  20160502172042
> Version  46.0.1
> 
> I could not reproduce the issue on the current release (46.0.1) or latest
> Nightly (49.0a1). Could you install the latest Firefox release
> (https://www.mozilla.org/en-US/firefox/new/) and retry?
> 
> If still reproducible on your side, please check with a new profile
> (https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-
> firefox-profiles) and/or Firefox Safe Mode
> (https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-
> mode).

I separately with a new configuration on the release version and Nightly tested.
Found to have problems in the Nightly, the premise is to quickly scroll multiple times.
Next, scroll background will delay for several seconds.

	Liviu Cirdei
	Comment 3 • 8 years ago

(In reply to 709922234 from comment #2)
 
> I separately with a new configuration on the release version and Nightly
> tested.

So, you could not reproduce anymore the initial issue?

> Found to have problems in the Nightly, the premise is to quickly scroll
> multiple times.
> Next, scroll background will delay for several seconds.

I could also reproduce this on Nightly both on Ubuntu 15.04 and Windows 10 only with e10s enabled. The scroll background delays indeed.
Could you reproduce the problem if you disable e10s in Nightly?

	Kartikaya Gupta (email:kats@mozilla.staktrace.com)
	Comment 4 • 8 years ago

The test case uses background-attachment:local, which needs APZ support. That is tracked in bug 1267656. We can probably dupe this bug over to that one, although for now I'll just mark it dependent since I'm not 100% sure if the patches for that will fix this.