Where: IN character creation for hexblade
when: in character creation for hexblade
what: when making a hexblade character the default alignment is chaotic good, and the 'recommended' alignment is lawful good
both of these are not compatible with anything hexblade related. It is fully possible to create a character with these wrong alignments, however when you get into the new-character room you cannot level up hexblade as your alignment is good and presumably cannot use hexblade abilities
recreate: make a character, it doesn't have to be finished to see the alignments mess up, this only occurs with the hexblade class. Testing this with both barbarian and monk, both of these do not get a wrong alignment