Mageslayer isn't quite functioning anymore

[Ziharku]

The Mage Slayer reaction is still visible and can be used. But the advantage to saves and the disadvantage on concentration saves aren't anywhere to be seen.

I tested it out against party members. While War Caster will show they have advantage on the save, they can also fail after a successful save when a mage slayer hits them. The combat log isn't showing that they have disadvantage on the concentration save, and isn't specifying that it's negated. So I have no idea how it's actually doing the formula, but it thinks they have advantage and is willing to let them fail the save on a success.

TLDR 1/3 of the Mage Slayer benefits are actually visible and the other 2 may or may not actually be functioning but they're wholly hidden on your character sheet. With and without mods. I've never taken the feat in bg3 before so I have no idea how it showed up on your sheet prior to 7.0, but now it's like this

[Ziharku]

Update: Found some Wizard Bane oil and when it's in effect, the combat log clearly states when the concentration save has disadvantage. So THAT still works, but it clearly DOESN'T say that when you attack with mage slayer.