1. Nether fences and regular fences do not connect 2. You can sleep during a thunderstorm, even if it's day 3. splash potion of harming will heal a skeleton 4. splash potion of healing will hurt a skeleton 5. It is possible to grow a tree past the height limit 6. A dropped item on a rail will stop the minecart 7. Rain has a slight chance to fill a cauldron P.s I found these on the internet so they might not be true
Another fact: If you place a carpet on top of any type of fence you can actually jump on top of it just like if it was any other kind of normal block. And if you also did not know, just like the spider jockeys, there is a 1% chance for a baby zombie to spawn on top of a chicken. If a baby zombie was not rare enough to be spawned, imagine it almost as twice as rarer for it to be spawned on a chicken.