I added a Glowing Stuck Quartzite to Pearl of the Diabo for the extra kick boost. The stat is correctly added to my character sheet, but does not display on the item stat list. I tried to attach a screenshot, but apparently that made the message too long to post?
Expected behavior, any stats an aug adds that are not natural stats of the base item are not displayed.
If this is expected, I don't believe it is consistent. I will need to find some items and confirm, but I'm almost positive that back in the LDoN days, adding a stat aug to an item that lacked that stat added it to the item's display (e.g. +6 STA to an item with no STA). Obviously mod2s may apply differently than base stats.
