[Software Updater] no instant expanding on "Details of Updates"

[Simon]

If I click on "> Details of updates" the Software Updater expands the window in two steps:

1) Expand the window a little (i assume to the default max-size). The content is expanded to the maximum-size, so everything outside the window is cut.
2) When I move the mouse outside the "> Details of updates" Text or do do any other event (like keyboard, etc.) it expands the window to the maximum size I resized it before.

I cant attach a screenshot, because therfore I need to press "Print Screen" button that expands the window.

ProblemType: Bug
DistroRelease: elementary OS 0.3
Package: elementary-desktop 1.350+394~ubuntu0.3.1 [origin: LP-PPA-elementary-os-daily]
ProcVersionSignature: Ubuntu 3.13.0-36.63-generic 3.13.11.6
Uname: Linux 3.13.0-36-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.4
Architecture: amd64
CrashDB: elementary_meta
CurrentDesktop: Pantheon
Date: Wed Sep 24 14:20:22 2014
InstallationDate: Installed on 2014-09-16 (7 days ago)
InstallationMedia: elementary OS 0.3 "Freya" - Daily amd64 (20140810)
ProcEnviron:
 LANGUAGE=de_DE
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: elementary-meta
ThirdParty: True
UpgradeStatus: No upgrade log present (probably fresh install)