Electronic Load Maynuo M9812B - Understanding Soft Start CV Mode

[kloetpatra]

Today I wanted to try the Soft Start CV Mode of my Maynuo M9812B Electronic Load in believe that it would be more gentle for the power supply.
However when looking at the scope you can see that after turning on the load it first acts as a dead short and then ramps up the voltage until hitting the CV limit.
Is my understanding wrong, or did Maynuo implement this function incorrectly (maybe copied from CC mode)?

A part from the Manual says:

In this mode, the measured power supplier can be avoided from current strike damage.

But the graph is clearly starting from 0 volts and the word "rise time" is reflecting my observation. So for the power supply it results in a current spike.

How should this function avoid "current strike damage" then. Shouldn't it start as "open circuit" and ramp down?
What is the correct use case if my understanding is wrong?

If I do not use the Soft Start it ramps down to V_const limit instantly. So this is not a load regulation problem of the power supply or a bug in general.

Shouldn't matter, but my settings were:
Power supply: V_set = 12 V, I_set = 500 mA
Electronic load: V_const = 5 V, T_rise = 10 s

[H.O]

I think it's implemented correctly.
It says that it acts as a condensive load which is a load where the current leads the voltage. It's like connecting a discharged capacitor across the power supply (though the voltage would not rise linearely).

CV softstart will start short circuit and gradually decrease the load current until the set voltage is met.
CC softstart will start open circuit and gradually increase the load current until the set current is met.

EDIT: I have not tried this but perhaps it's possible to "combine" the CC softstart and CC+CV modes.