DWP

I'm trying to filter displayed contacts with groups. I have a lot of contacts in google acc and try to see only one group (e.g. group1).
0. grouping on PC and synhronization
1. go to Global settings - contacts to display
2. turn off all accounts except google (viber, skype, etc. as they are sources of contacts)
3. customize - turn on only the necessary group.
After that I see all google contacts. More that if I skip step #2 I see contacts from all accounts. Looks like customize filter doesn't work at all.
Any ideas?

DW 3.0.5.4, PHONE xiaomi redmi 3s, OS android 6.0.1 (miui 8.2.5.0)

Hello
Usually the "Contacts" group contains all the contacts.
You need to deselect it.