Invis not breaking on damage from falling
 

Pretty sure it should. Any damage breaks the effect.

And also, falling from the ek bridge only does 5 damage to my mage. I think it should be a lot more.

No, fall dmg never broke invis/ITU.

You really need to provide some kind of research or proof. Not just 'well i think this is how it should be'.

Also, fall dmg is dependent on your char's weight. If your mage is only like 20 stone, you don't take much fall dmg.

Fall damage is also dependent on your time spent in the air, not height. (Though the two are obviously related. You can spam your screenshot key in mid air to simulate lag and hit the ground 2 feet below you for 32k(or pre-fix 10k dmg)

I also do not remember fall dmg breaking invis.