There were two issues: - The third math node socket does not exist in old enough files. - The comment incorrectly referred to the vector math node. Differential Revision: https://developer.blender.org/D13219
There were two issues: - The third math node socket does not exist in old enough files. - The comment incorrectly referred to the vector math node. Differential Revision: https://developer.blender.org/D13219