Noticed that the Staff wasn't applying the +2 to attack and damage rolls as it should be doing. Can be gotten around by customizing the item but it is incorrect by default when selected from the Inventory browser.

It works fine for me. Tried it on multiple characters and worked on all of them.

OP, don't forget that in addition to equipping it you need to check the attunement box in the attunement section of the inventory tab.

Yeah that was it, my bad. Forgot it requires attunement since I had a generic +1 weapon and had compared it to that