Item sprites shrinking/moving when accesing the creative inventory

Accesing the creative inventory seems to cause item sprites to shrink or move upwards when accesing the creative inventory. The specific confirmed behaviour is mentioned below:

Shrinking sprites:
All 16x16x16 block sprites
Daylight sensor
All pressure plates

Sprites moving upwards:

Redstone torch
Torch

Sprites moving right:
All Buttons