Flipping sprite removes body overlap collision detection

[BatteryAcid]

I have a sprite that animates a walk that "dies" when it comes into contact with a bullet.   The bullet(s) are just placed on the screen which "overlap" the body of the bad guy, and he "dies".

Flipping the sprite's X scale to -1 causes the overlap collision detection to fail for the bullet/badguy.  Below is the relevant code, any ideas?  Possible bug?

this.game.load.spritesheet('badguy-walk', 'images/bad-guy-walk.png', 160, 239);

// ...

var badGuyGroup = game.add.group();
badGuyGroup.enableBody = true;
badGuyGroup.physicsBodyType = Phaser.Physics.ARCADE;

var badguy = badGuyGroup.create(400, 400, "badguy-walk");
badguy.scale.setTo(-1, 1); // -1 Breaks collision, 1 works
badguy.animations.add("badGuyWalk");
badguy.animations.play("badGuyWalk", 30, true);

// ... overlap detection method doesn't fire
// the bullet group is a common physics enabled group of sprites
this.game.physics.arcade.overlap(
  badGuyGroup, this.bullets.getBulletGroup(), this.badGuyHit, null, this);

 

[samme]

Use the debug.body() and debug.physicsGroup() methods to show the body boundaries.

[BatteryAcid]

7 minutes ago, samme said:

Use the debug.body() and debug.physicsGroup() methods to show the body boundaries.

I do have body debug enabled, the green body box is there as it should be, just nothing happens upon overlap.

[BatteryAcid]

I couldn't reproduce this using the phaser sandbox so I figured it was some super rare edge case.  Decided to reverse animation just using a flipped tile-map image.