DrJawaPhD
Adventurer
Please parse out an explanation of how the wording in the book that says this. I'm not trying to be pedantic here, the wording is very confusingI do. The wording of Nick makes it clear to me that Light and Nick are mutually exclusive. It's one or the other, not both.
Light states "When you take the Attack action on your turn, you can make one extra attack as a bonus action later in the same turn", which Nick then modifies it to not require a bonus action but states that you can only do this free attack once per turn.
If you are able to take a second Attack action with a Light weapon, you again trigger the "you can make one extra attack as a bonus action" language. You are prevented from using the Nick property a second time, but you still have a bonus action available and no wording there prevents it from being used on an offhand attack.