android 9 blu vivo x6 gestures issue

hi, I have an issue. I recently got the blu vivo x6, and i think this is a andriod os problem, idk how to fix it, so basically what happens is. When having gestures enabled, if I take a screenshot or reset the phone it reverts back to the regular navigation bar.

 

ok when i enable sliding gestures, and if i reboot the phone, or if i take a screenshot the gestures go back to navigation bar with the 3 touch buttons, back home and recent apps.

 

and i have tried factory resetting, but the gestures settings for some reason doesn't want to stay

 

i have enabled the "Use Sliding gestures to perform the same function" it removes the back button,home, and recent apps button, but when i reboot the phone it reverts back to the buttons, and I have tried applying the "swipe up on home gesture" to see if that would make the setting stick, but it didnt. I also reached out to a friend that has the same phone with android 9 pie on it, and his does the same.

 

i'm gonna contact them and see if they are going to fix it in an update.