bonus bWeaponMatkRate not working

[hartonox]

i already check damage for

1693,Magical_Yellow_Foxtail_Staff,Magical Yellow Foxtail Staff,5,20,,700,140:280,,1,1,0x80000000,7,2,2,4,175,1,10,{ .@r = getrefine(); bonus bMatkRate,3*(.@r/2); bonus4 bAutoSpellOnSkill,"SU_FRESHSHRIMP","SU_ARCLOUSEDASH",max(1,getskilllv("SU_ARCLOUSEDASH")),200; bonus4 bAutoSpellOnSkill,"SU_SV_STEMSPEAR","SU_FRESHSHRIMP",max(1,getskilllv("SU_FRESHSHRIMP")),200; if(.@r>=7){ .@r = min(.@r,10)-7; bonus bWeaponAtkRate,(20*.@r)+0; bonus bWeaponMatkRate,(20*.@r)+5550;} },{},{}} },{},{}

i have item 1693 +7, and i try bonus bWeaponMatkRate,(20*.@r)+5550; and trying with bonus bWeaponMatkRate,(20*.@r)+0; its have same damage when i trying and i already check at github https://github.com/rathena/rathena/issues/1161 and i already use latest rathena but still problem