Texture Mip Gen Settings not working?

Hello.
I’ve noticed that UE 4.17 when I use a Mip Gen Setting, the texture is unaffected.

I have compared the same textures with two engines 4.17 and 4.16.3

Both textures have default Mip Gen Setting.

There is something wrong with UE 4.17. Both of the versions have selected “BLUR 5” but only 4.16.3 reacts to it.