Wrong riven stats in the arsenal screen for equipped riven

[(NSW)M0rgarath]

So i have a Nukor riven that while equipped in the arsenal on a Kuva Nukor displays as +93.4% crit chance + 59% crit damage. According to the wiki the base value for crit damage on rivens is 0.9-1.1x 89.1% for secondaries, multiplied by 1 due to 2 pos 0 neg. Riven disposition of Kuva Nukor is 0.5 resulting in +49% crit damage being the maximum value possible. So how do i have 59%? Is the arsenal screen buggy?

Also: The values don't match the ones for regular Nukor either, the stats for regular Nukor are much much higher.