Bleed magnitude supports gems seem bugged

Hello.

It seems that Deep cuts I and II as well as concoct are somehow bugged as they don't increase bleed damage by any means :
( At least for me, if anyone can confirm )

I tried this in game using this formula :

flameblast gem level 17 +
Bleed III for 100% bleed chance
elemental focus to avoid messing with ignite
controlled destruction to avoid crit
with and without the mentioned supports for bleed magnitude

blood mage with blood barbs to make ele damage apply to bleed magnitude
boss cursed with temporal chains for the aggravated

I tested on rootdredge from first zone A3 normal
The boss has some energy shield on it not accounted in the calculation but I think it's negligible regarding the results.

The results are :
flameblast + EleFocus + CtrlDestru =
30896 total damage - 9572 hit dmg = 21324 bleed
flameblast + EleFocus + CtrlDestru + deepcuts II =
20987 total damage - 6449 hit dmg = 14538 bleed
flameblast + EleFocus + CtrlDestru + concoct II ( full life flask 75 charges ) =
32429 total damage - 10078 hit = 22351 bleed

So with and without concot, damages are approximatly the same, accounting for base hit variance
And deep cuts is just applying the 30% less damage resulting in 30% less hit and 30% less bleed damage


I tried with the Reap skill as well to check if the physical tag of the supports wasn't messing with flameblast but the results are the same.

The damage are also accounting for my passive tree and gear as well as I was not going to reset my tree just to test this, but this is standard bleed magnitude, crit, spell damage, crit damage stuff, so just inflating the numbers. No chenanigans here.

This is really killing my build, as I was going for a huge bleed flamblaster. Now it's just a papercut flameblaster.

I can provide video footage if needed

Thanks !

Edit : Added hypothetical tone, as noone else confirmed this and this could be a just me bug

I'm having the same issue trying to use concoct with any spells.

The wording on the gem does not exclude spell skills and you can support spells and have them consume flask charges, but it doesn't increase their bleeds.

We must be the only two people crazy enough to try to make a spell bleed build work haha