primus does not refresh display in GL programs with bumblebee-nvidia

When running gl programs through primus, the viewport for the application is not refreshed when a new frame is drawn unless the window itself is resized.

The window begins with garbage inside where the gl viewport should be.

This same configuration worked in Ubuntu 13.10 but no longer works under 14.04 beta 1.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: primus 0~20131127-2
ProcVersionSignature: Ubuntu 3.13.0-23.45-generic 3.13.8
Uname: Linux 3.13.0-23-generic x86_64
ApportVersion: 2.14.1-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Apr 7 19:24:52 2014
InstallationDate: Installed on 2014-02-10 (56 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
SourcePackage: primus
UpgradeStatus: Upgraded to trusty on 2014-03-17 (21 days ago)