Blurry sprite when flipped on x-axis

[Deathspike]

I have a sprite that I flipped with:

this.scale.x = -1;

After anchoring the sprite on the center to ensure there is no X/Y offset:

this.anchor.setTo(0.5, 1);

When I play an animation while flipped, the sprite becomes blurry. When idle, it is perfect.

 

What can be the cause of the blurryness that occurs when animated+flipped?

[gingerbeardman]

What are the dimensions of your sprite and what scaling mode are you using?

[Deathspike]

The dimensions of my sprite are 32x32. The scaling mode is SHOW_ALL.