FF CF+Rec-Red Broken?
I was going to suggest that this might indeed be the cause, but you already seem to be on top of things... :/
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Went ahead and did a bug report. Maybe Synapse and company will see it.
Be well, people of CoH.

IIRC, the forcefeedback proc does not work in shield charge, so it makes sense that it doesn't work in Spring Attack.
It doesn't work in pseudo-pets - the + recharge is given to the summoned pet, thus it is useless in tp style powers
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Thanks for the confirmation, yall.
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Doesn't the activation of the power (The TP and Summon part) trigger a single proc check on the caster, and then the AoE damage+Knockdown triggers a check for each target (uselessly on the pet, as others have mentioned)?
@Roderick
Howdy. Noticed that the Force Feedback Proc: Chance for +Recharge Reduction is not functioning in Leaping Pool: Spring Attack.
Is this a known issue? Is it broken because Spring Attack creates a pet that does the damage? Does anyone know if the FF:CF+RR proc works in the other tport attack powers like Shield Charge?
Be well, people of CoH.