Electronic – Mic5158 does not regulate

Refering to this post, I changed mic5156 to mic5158 (datasheet) and
this mos.

I wired it several times as the datasheet shows but I can't get any regulated
voltage.
In order to understand what happens, I removed the mos and put a potentiometer
instead of the divider. The result is (IMHO) what it should: The gate voltage is
maximum when the divider is below the 1.235V reference voltage the goes to
"nearly zero" (in fact around 1 v) when the divider is above 1.235V.

Yellow: divider

Green: Vcp

Orange: Vgate

Then, I rebuild the circuit with the mos and did the following measurement:

Yellow: divider

Green: Vcp

Orange: Vgate

Light blue: Vgs

Starting with a 1A load, I raised it until 10A.

Some observations:

• The output voltage goes from "too high" to "too low". The voltage is correct only when on marker 2 in the below capture.

• The pump voltage falls to 0v on marker 1.

I definitely don't understand what happen.
Did I do a wrong choice with the mos?
Should I work around capacitors of the charge pump?
Is there a reason why the gate voltage in first test goes to "nearly 0v"
and not 0v?
Is it a regular behaviour that the charge pump voltage goes to 0? I supposed that It should stay always high, only the Vgs changes but may be I"m wrong.

A lot of interrogations…

[update]

Schematic:

Breadboard:

[Update]

I changed MOS for IRF610 (datasheet) and… It works! The specs does not fit my needs but the voltage is regulated with. Still wonder which characteristic makes the original mos unsuitable.