[2019] Missiles Specialization skill no longer work?

Today, a friend ask me if Rocket/Light Missiles have been nerf, and i say no cause no mention of that in changelog... BUT! when we simulate a ship both in game and wioth Pyfa, we notice a differance of RoF

Different ROF here

after more investigate, we try to set Rocket Specialization Skill to 0 in Pyfa (cause it affect RoF) and.... Both value was same again
making another test on a RLML Caracal : Same resulte, lower IG DPS w base skill, same value w Spe at 0

Same RoF w Spe at 0 in Pyfa Character Sheet

same RoF w Rocket Specialization at p

this bug seem to affect only Missiles, Turret modules stay unaffected

anyone else notice that here?
Any CCP's Word about that?