OPENSHOT high CPU

Opening an MP4 file directly in Openshot (from Krusader) gives high 100% cpu while being idle (doing nothing).

Saving as project (osp) and reopening osp from Krusader makes Openshot work as expected close to 0 cpu being idle.

Closing the project and open mp4 file again in Openshot from filemanager gives high CPU again.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: openshot 1.4.3-1.1
ProcVersionSignature: Ubuntu 3.13.0-45.74-generic 3.13.11-ckt13
Uname: Linux 3.13.0-45-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Feb 16 14:12:19 2015
InstallationDate: Installed on 2013-04-26 (660 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
PackageArchitecture: all
SourcePackage: openshot
UpgradeStatus: Upgraded to trusty on 2014-04-24 (297 days ago)