The shield mechanically works as normal but bugs out visually.

If the shield block is cancelled at any moment when it is not slammed on the ground doing it's magnet ability, the animation will begin stuttering/flailing heavily and repeating the last few frames.

The resistor shield already blocks a lot of the screen, this just makes it worse..

This can be fixed by simply opening the inventory, where the shield will return back to it's idle state, doing a full slam of the shield, then releasing the block button, or by very quickly and lightly tapping the block button.

Also forgot to mention this only happens in the utility belt.

Either an Alex's Caves or Inventorio update fixed this.
Cancelling a resistor shield slam will no longer cause an animation glitch.

The only "bug" is that right when a slam happens, the animation of the resistor shield kinda "resets" for a frame. But this is a bug on Alex's Cave's end because it happens even without Inventorio