Pressing "Propagate to Shapes" now propagates the current shapes to the selected object's respective keys, if at least one selected object has shape keys. Discussion here: https://devtalk.blender.org/t/behaviour-of-shape-keys-in-multi-object-mode/1956/4 Changes from reviewer (Dalai Felinto): * Code style * Error message * Remove dead code Reviewers: dfelinto Differential Revision: https://developer.blender.org/D3651