Corvus question

Hi, I'm trying to understand a little ... "quirk" with Corvus .. probably working as intended, but anyway ...

So that ability blurb, basically comes down to : "Hit them, and it's a crit. Lose a glaive charge." (basically ... )
However, I've noticed that the 2nd hit in a combo (ie the first light) doesn't seem to always crit?
Of course, it also doesn't use a charge? So wondering why that is .. if it's intended .. etc. etc.
example:

In this video (slowed down) .. note the 2nd hit in combo is not crit .. all glaive charges available .. as seen in above pic, no nodes active (just for confirmation: Variant 4, classic difficulty, 2-2 .. Moon Knight boss)
https://youtu.be/bQkmn6YZzK0

So that ability blurb, basically comes down to : "Hit them, and it's a crit. Lose a glaive charge." (basically ... )
However, I've noticed that the 2nd hit in a combo (ie the first light) doesn't seem to always crit?
Of course, it also doesn't use a charge? So wondering why that is .. if it's intended .. etc. etc.
example:

In this video (slowed down) .. note the 2nd hit in combo is not crit .. all glaive charges available .. as seen in above pic, no nodes active (just for confirmation: Variant 4, classic difficulty, 2-2 .. Moon Knight boss)

1
Comments
Ok, that makes sense ... I never really noticed he was throwing a punch, just thought it was an odd back swing of the glaive!!
LOL
Ok, all good, makes sense!
Thanks!