Wand of Orcus not showing up in Attack Actions

I was wondering if it was just me or if its mace attack isn't supposed to show up. I have it equipped and it is attuned, and all of the other bonuses are there as well.

This came up in another thread recently; it's because D&D Beyond has implemented the 5.5e version as a wand rather than a weapon. This is technically correct based on how it's classified in the Dungeon Master's Guide, but it means the D&D Beyond doesn't include a weapon action for it on the character sheet. The 5e version was (technically incorrectly) classified as a weapon in D&D Beyond, presumably for this exact reason, but they didn't carry that forward for the 5.5e version.

You can add a separate Mace, +3 to your inventory to get a weapon action with the right stats, though it won't include the extra necrotic damage.

You can also add a custom attack for the extra necrotic damage.