Mechjeb "Ascent Guidance" "Stock-Style Gravity Turn" "Intermediate Altitude"

[antipro]

Situation: Landed on Mun. Using "Stock-Style Gravity Turn" to reach the desired orbit.

Like I've showed in a couple of previous posts, when I set the "Intermediate Altitude" lower than the "Orbit Altitude", the result is that:
the node at "Intermediate Altitude" isn't created and the ship does not auto-warp to it,
anyway when the ship reaches it, it accelerate correctly, then a node at the final altitude Ap is created, the ship auto-warp to it and circularize.

if instead,
Like is written here: https://genhis.github.io/KRPC.MechJeb/csharp/ascent-autopilot.html
" Intermediate apoapsis altitude to coast to and then raise the apoapsis up to the eventual final target. May be set to equal the final target in order to skip the intermediate phase. "

I set "Intermediate Altitude" equal to "Orbit Altitude", the ship take off and accelerate until the Ap is reached, then a node is created in order to circularize and the ship starts to rotate and auto-warp.

In both cases: "Intermediate Altitude" lower or equal than "Orbit Altitude", I can reach a correct final orbit.
But if "Intermediate Altitude" is lower, I have to wait ages for the ship reaches it or manually warp, paying attention to do not overtake the Ap.

 

My questions are:
1 - Why the intermediate node isn't created, the ship doesn't auto-warp, the Autopilot Status remains in "Fine Tuning Intermediate Altitude".?
2 - What is the point in set up a lower intermediate altitude? it doesn't work completely well and it does not seems to give me any advantages.
 

here another video showing both the maneuvers.
when you see the ship warp to 32Km it's me manually doing it.
https://www.dropbox.com/s/13zdej16alwmahj/2020-10-07 04-09-41.mkv?dl=0

Edited October 7, 2020 by antipro