Summary:
When using the "Register Tools and Materials" option with the Weaving skill it seems to always prioritize Brionac when a "bladed tool" is needed. It will take it from ANY location including your extra equipment slots. It will literally take it out of your slots and put it into your main hand slot.
I also tried the same setup with 2 tailoring kits to see if its due to the equipment slot but it wasnt. (Videos attached)
Difficulty:
Normal. Weird bug, doesn't really hurt. Just really weird. (Might accidentally kill brionac dura)
Occurrence:
Always.