Wallpaper blurs when swiping from an app to the home page

[weryakarimi1381]

Why the phone gets worse by every update?

The wallpaper gets blurred when switching from an app to the home page. Why???

It happens when "swipe gesture" is on instead of "bottons.

Settings > Display > Navigation Bar > Swipe Gesture/Bottons 

[Kai_조화 · Accepted solution]

It's supposed to be blurred for a few moments when swiping to Home Screen .

[Hyde50]

I have my navigation bar in the side panel