The warrick drop legendary great sword has a stamina % increase enchantment that doesn’t seem to be working, the stamina on the stats screen is the same with or without it and can’t seem to be able to roll even one time more which I probably should be with 28% extra stamina
Please look into it
Thank you for the report. Looking into this now 
As of the time of this post, I can confirm this is still bugged. Stamina unchanged with or without the sword equipped.