Event receive draw hud stops firing after unposses and posses of player character

I have a script where, very simply, after pressing a button, spawns a character, unpossesses the player character, and then possesses the new character. However, after possessing the new character, the HUD Event Receive Draw HUD ceases to fire. All other blueprint work as expected, the new possessed player character works as expected. Is there a reason for this or is it just a bug?