Steps to reproduce:
1. Create a new project with vfx package
2. Add vfx asset and add log or exp operator
3. Change log and exp type to "Direction" and make it output x/y/z float value
4. Create Direction node, plug it to log or exp node and make it output x/y/z float value
5. Observe that the results are different

Expected result: "spaceable" types in log/exp operators are confusing and should be considered to be removed

Reproduced in: 2020.1.0a14, vfx/staging