The link to the video that shows the bug in action: https://youtu.be/ps29GzCaz0g
The steps are:
Step #1 Place down bird snare.
Step #2 Wait until you get a bird.(Mine are Crimson Swifts)
Step #3 When you get the bird click the trap then move away and then click the trap again.
Step #4 Get double the drops and xp.