Infernal blow + tribal fury + melee splash

Hello,

I stumbled upon what I believe to be a bug regarding the interaction between infernal blow, some source of additional target (in this instance Tribal Fury), melee splash and hydrosphere. Here is a video of the bug:
https://youtu.be/HzhLC6Lbq6A

What we see in the video:
Strikes 1-3: The character is out of range and does not hit anything, the tribal fury clone hits the target and an explosion occurs after a small delay, as expected
Strikes 4-6: The character hits the hydrosphere releasing a splash that does not hit the target, the tribal fury clone hits the target and an explosion occurs after a small delay, as expected
Strikes 7-10: The character hits the hydrosphere releasing a splash that DOES hit the target, the tribal fury clone hits the target but NO EXPLOSION OCCUR.

I understand that the melee splash does not apply the charged debuff and therefore a target hit only by the splash would not cause an explosion. I also understand that hydrosphere is not an enemy and therefore does not receive charged debuffs. But why does the melee splash from the hydrosphere prevent the tribal fury clone hit to apply the charged debuff to the target ?

I believe this might have something to do with one of the description lines of the skill "Attacks with your weapon, applying a charged debuff to enemies hit by your strike, and an uncharged debuff to any other enemies hit."

I've never actually read into infernal blow that much before but it must have something to do with this "uncharged debuff"
I tried what you did as well and sometimes the monster would explode, sometimes it wouldn't. I think this is because if the melee splash hits the monster first (or last), then this uncharged debuff is added or overtakes the charged buff from the ancestral call hit, then doesn't explode I suppose.

Taking out melee splash and testing it on 3 monsters with awakened ancestral call has the 3 monsters consistently exploding, so that's what I've concluded.

Such an interesting skill, maybe they made it like that so the splash + explosion doesn't shotgun, making it too OP?

You might be right about it having something to do with the "Attacks with your weapon, applying a charged debuff to enemies hit by your strike, and an uncharged debuff to any other enemies hit." line. It is not clear from that description whether an enemy hit both by splash and an ancestral call hit would be able to receive both the charged and uncharged debuff or if those are mutually exclusive. Would love to receive some confirmation from GGG that this is the intended behaviour.