Rogue “Inner Sight” (Bugged?)

Last time i played diablo 4, was when they rescaled the difficulty levels (I think it was 2 seasons ago). At that time, I saw that “Inner Sight” was failing to trigger around 30% of times. Basically, a Mob is Marked, i would hit him and “Inner Sight” would just not trigger, forcing me have to wait for the mark to change mob.

Now I come back, in this new season, and I’m seeing exactly the same behavior.

So, I have to ask, is this really a “Bug”, or did they change how “Inner Sight” works.

Because “Inner Sight” descriptions didn’t change (Attack enemies to fill your gauge.)