broken packages under certain circumstances

Hi, I noticed some packages being in state "Files could not be expanded: could not apply patch 'project.diff'" for no apparent reasons. Happened for graphics/blender, and now I noticed: https://build.opensuse.org/package/show/network:ha-clustering:Factory/drbd For blender, I fixed _link and superfluous files manually. Any idea, what this is about? Best, Pete