Graphic bug when placing redstone torch on piston next to slime block

Issue: when placing a redstone torch on top of a sticky piston that is attached to a piece of cobblestone with a slime block above it, the graphic texture of both the slime block and the torch are glitched momentarily.

Steps to reproduce: place a sticky piston with a piece of cobblestone on the pistons head - place a slime block on top of the cobblestone. Then place a redstone torch on top of the sticky piston next to the slime block.

Attached is a screenshot that captures the graphic glitch produced.