plank flickers when you mouse over it

[Ezra Sharp]

I Noticed this after I installed Birdie, although it still happens when Birdie is not running.

Running the mouse over plank makes it flicker. See the screen cast, it missed some of the smaller flickers. but you get the idea.

ProblemType: Bug
DistroRelease: elementary OS 0.2
Package: elementary-desktop 1.299-0~373~precise1 [origin: LP-PPA-elementary-os-daily]
ProcVersionSignature: Ubuntu 3.5.0-28.48~precise1-generic 3.5.7.9
Uname: Linux 3.5.0-28-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu17.2+elementary3~precise1
Architecture: amd64
CrashDB: elementary_meta
Date: Tue May 7 01:23:25 2013
InstallationMedia: elementary OS 0.2 "Luna" - Beta 1 amd64 (20121114)
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en_NZ:en
 PATH=(custom, no user)
 LANG=en_NZ.UTF-8
 SHELL=/bin/bash
SourcePackage: elementary-meta
SuspiciousXErrors:

ThirdParty: True
UpgradeStatus: No upgrade log present (probably fresh install)

[Ezra Sharp (nicekiwi)]

I;d say this is caused by Birdie some how, after a fresh boot plank ran fine, as soon as I started Birdie the flickering started.

[Rico Tzschichholz (ricotz)]

While we don't use double-buffering it is caused by writing/drawing twice onto the Cairo.Context given by gtk.