A wierd bug where my phone gets locked when i double tap

[absingh95]

I don't know if it's a feature or a bug. After updating to windows 10 for mobile via the insider slow program, whenever I double tap at the bottom of the screen, my phone gets locked automatically. Is anyone else facing this issue? Do let me know asap. I am using Lumia 535

 

[sanu rajan1]

dude its a new feature to lock the screen(double tap on the navigation bar)