When you walk into or near a button, It's texture is stretched and surrounds the player.

Applies to both MCPE and MCWIN10

Steps to reproduce:

(For pressure plate)

Step 1: Put any pressure plate on any fence
Step 2: Walk directly or pass the pressure plate and it's texture would surround the player

(For Button)

Step 1: Put any button on any block (2 blocks high)
Step 2: Walk directly or near pass the button and it's texture would surround the player

Affect Device(s):

iPod Touch 6th Generation
LG K7
Desktop - Windows 10