For any Warlock that takes the Devil's Sight Invocation oseveral possible things would be expected to happen on the Senses section of a character sheet.
A Character who doesn't have Dark Vision from another racial source, would have the Dark Vision, 120' noted on the senses section.
A character who does have Dark Vision, but only to 60' would have the range changed to 120'
For any Warlock that takes the Devil's Sight Invocation oseveral possible things would be expected to happen on the Senses section of a character sheet.
Well something changed.
Beforehand, the invocation didn't do anything (dark vision remained at 60'). Now the character I was looking at has Darkvision to 180'.