the aggressive mobs do not cross the rails naturally, I did a test a villager trapped and raked off the rail and the zombies just crossed the rail when one pushed the other.

I believe this is working as intended. Rails are not included to be something hostile mobs can pathfind over. 

I believe this is working as intended. Rails are not included to be something hostile mobs can pathfind over. 

also the same for iron golem.

also the same for iron golem.

Thank you for your report!
We're actually already tracking this issue at MC-33359, so we will resolve and link this ticket as a Duplicate.

This issue is actually working as intended by the game designers.

If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.

Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki

Thank you for your report!
We're actually already tracking this issue at MC-33359, so we will resolve and link this ticket as a Duplicate.

This issue is actually working as intended by the game designers.

If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.

Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki