Workbenches will not work if places on Terrain instead of a Building Block with a Tool Cupboard. This has been broken for a long time, could we get a fix for this? As soon as I remove Building Workbench plugin Workbenches work again on terrain.
Not working when placed on terrain without tool cupboard
This was an issue prior to version 1.2.0. Are you still seeing this issue as it should have been resolved and I just tested and confirmed it's working?

