`DRW_STATE_CLIP_PLANES` has to be enabled independent of the workbench material. Reviewers: fclem, jbakker Differential Revision: https://developer.blender.org/D5278
`DRW_STATE_CLIP_PLANES` has to be enabled independent of the workbench material. Reviewers: fclem, jbakker Differential Revision: https://developer.blender.org/D5278