Hey Ramza.
I am using the default crit formula:
(base + plus) * rate + flat

The issue still happens with exparamfix disabled. Additionally, even if I disable ExtraParamFormula, If I equip a weapon with crit chance in mainhand and navigate to the status page it appears to be fine at first:

But if I equip another crit weapon in the offhand and navigate to the status page it causes the split params to default again:

That is all with this load order:

This next part is an entirely separate issue, but it is a bit more of a concern on my part for my project in regards to exparamfix DW edition. Parry, Expertise, and the split crit/hit appear to crash the game when navigating to the attribute page even with the requisite plugins:

Removing the extra params appears to fix the crashing issue. The block/pierce params seem to be fine:

Sorry to dump all of this on you. I really appreciate you.