Hey there,
Same issue as well.
I just finished my Elec/Storm build and I noticed a difference in "Steamy Mist".
With the exact same slotting, Mids gives this power a 6.82% Defense Buff to all, whereas in-game info gives it a 5.91% Defense buff.
Minor difference I know, but enough to prevent me from reaching my softcaps 😭
Is it a known issue ? I can provide build infos and screen shots if needed.