In a village, I created a iron golem to defend villagers. The golem got temporarily stuck after detecting a mob on each side (from about a 10 block distance). The golem spun around in circles until going a different way to attack a different mob.

I thought the golem may attack at least one of the mobs.

what actually happened was that the golem got stuck and spun, and I tried pushing it to see if it would move, but it kept spinning.

Not sure if this was a one time thing or an actual bug, but to try and reproduce:
1. Place two mobs about 20 blocks apart
2. Place an iron golem in the middle
Again not sure if it just happened as a one time thing or not, but i thought i should report it anyway.