On the other side the varying jump highs SHOULDN'T happen either....
This is true. And yet i am a bit surprised. I tested this the other day, with the last stable release, and i could not find a substantially frame dependence no more.
I did this while i was working on this:
Aphrodite, accuracy is pretty perfect. It seems to me that jumping is now frame independend. (latest stable release)
https://www.dropbox.com/s/i3h3w3lpw1idw ... .capx?dl=0
On the other hand, there is few pixels difference between what i could predict and what i actuary could measure. I (for myself) concluded that is impossible to accurately get the jump height in event, with triggers. As you can see (i hope) the predicted values are way more accurate. Does this help you ?
For the 'on wall'. That is so depending on the collision mask, mirroring and more things, animations ... etc. Really cant help without the capx. Also, and yes, when you jump of a solid platform, and you come close to that perform, there is a wall detected.