I've also tested the mesa_7_4 branch as late as commit 49e0c74ddd91900fc4effb6d305d56e0563b456d but the problem still occurs there.
I've also tested the mesa_7_4 branch as late as commit 49e0c74ddd91900 fc4effb6d305d56 e0563b456d but the problem still occurs there.