The Material should be contracting and expanding if it is working correctly, but after version 4.16 it is not. Instead it is solid in appearance in the material editor viewport. Below I have linked videos and the the texture that I applied to check if it only happened on some textures.
4.16 CL - 3-3561208 (Does function in)
4.17 CL - 1-3586342 (Does not function in)
-See the attached videos for for a visual of the blueprints to recreate this
Expected: In the material viewport, the material should contract and expand if it is working
Results: The texture is not moving(Expanding and contracting) it looks like it is trying to work but very slowly before everything is connected
Head over to the existing Questions & Answers thread and let us know what's up.