Music's headerbar icons state flickers on opening

[Ezra Sharp]

When opening the Music App, (usually for the first time, but still visible afterwards) the icons in the headerbar change from a state with borders around them and an enabled searchbar to one without the borders and a disabled searchbar.

ProblemType: Bug
DistroRelease: elementary OS 0.3
Package: elementary-desktop 1.349+393~ubuntu0.3.1 [origin: LP-PPA-elementary-os-daily]
ProcVersionSignature: Ubuntu 3.13.0-33.58-generic 3.13.11.4
Uname: Linux 3.13.0-33-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: amd64
CrashDB: elementary_meta
CurrentDesktop: Pantheon
Date: Wed Aug 13 09:13:21 2014
InstallationDate: Installed on 2014-08-12 (0 days ago)
InstallationMedia: elementary OS 0.3 "Freya" - Daily amd64 (20140810)
ProcEnviron:
 LANGUAGE=en_NZ:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_NZ.UTF-8
 SHELL=/bin/bash
SourcePackage: elementary-meta
SuspiciousXErrors:

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

[PerfectCarl (name-is-carl)]

LIkely due to some grid/list view initialization that taking some time.