Iron Golems don't attack Monsters if the are on a wooden floor

There is a screenshut

There is a screenshut

There is a screenshut

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Can you see it?

Can you see it?

As I was observing this; Iron golems seam to run around really fast and they rarely attack anything when standing on wooden planks.

As I was observing this; Iron golems seam to run around really fast and they rarely attack anything when standing on wooden planks.

As I was observing this; Iron golems seam to run around really fast and they rarely attack anything when standing on wooden planks.

really? I think this is a bug of my map.

Because on all devices I download this map, they didn't attack on the wooden planks