When viewing the artifacts in your bag, the item level does not reflect the +15 ilvls that come with the Netherlight crucible.

Here is a screenshot highlighting the difference.

Can you confirm whether installing the latest version of LibItemUpgradeInfo-1.0 fixes the issue?

It appears that GetDetailedItemLevelInfo now makes it much easier to determine iLvl.

I confirmed the issue and I'm not seeing a change with the new library. So it seems like the API isn't factoring in the crucible upgrades, either. I wonder what the code for the standard tooltip looks like, since that displays the correct value?

I dug through the new lib and see a /checkslot command for debugging. I'll see what that has to say.

Alas, it's worse than expected: GetDetailedItemLevelInfo is returning 750,false,750 for my main hand (slot 16) so it's not even showing the results of applied Artifact Power. The bag shows 909 and the tooltip shows 914.

I found I had to patch the library, adding this sequence to the start of the /checkslot function to force the Blizzard debug library to load:

if not DevTools_Dump then
    LoadAddOn("Blizzard_DebugTools")
end
if not DevTools_Dump then
  _G.print("No DevTools_Dump!")
  return
end

This is no longer an issue because the NLC was removed. Might be a similar issue with the azerite pieces in bfa but this should be closed for now.

Fixed via 2d532c8.