Hello,
I was trying to make calculation of damage stats and noticed an issue with an item that has 25 quality + 30 quality from sanctify. Below is based on single item as I dont have another item to test it, if its specific to item or general issue.
I have All Damage 374% on character stats when naked (number is from flat paragon nodes) with no multiplier active as +374% comes from paragons. When i add any item not above 25 quality with +damage%, the stat 374% increases by the amount written on the item as expected. However, its showing wrong number when I equip the bow with 55 quality, it has +120.9% damage affix (enchanted affix, might be the reason of bug?). When I equip this bow, the stat doesnt become 494,9%, but it becomes 471,5% with 23,4% lacking.
For the same bow, Dexterity value correctly shows in character stats. The affix +130,2% Crit Damage correctly shows as well. The inherent affix of bow is +155% Crit Damage but only +100% applies from it as its specified in the square brackets. (Why the limit tho..?) Couldnt bother testing Max Life stat because I dont wanna reset paragons again 
I didnt write this because of that 23,4% lacking, but it naturally made me question for any bonuses items with over 25 quality I may get. For example, I have tampering affix with “+88,3% Chance for flurry to deal double damage” on that bow, and now I dont know if this is correctly applied or not because it doesnt show anywhere. (Why again? Illogical to not show all tampering effects in character stats).
I hope it’d be useful to get a clarification on the problem.