Apps don't ask for root permission I rooted my Lineage OS 14.1 but none of my apps ask for root permissions. 

I followed the instructions of this link and the root access option in my phone is "apps and adb". Do I miss something? 

I have a Moto G4 Plus and I've already tested Sixaxis and ES File Manager, none of them ask for root permissions.
You have to install the su-arm.zip package from "Extras" in the downloads page, then install it from the recovery, then enable Developer Options and set "Root Access" to Apps and Adb.