One of my characters is a barbarian and has Danger Sense which reads:

"At 2nd level, you gain an uncanny sense of when things nearby aren’t as they should be, giving you an edge when you dodge away from danger.
You have advantage on Dexterity saving throws against effects that you can see, such as traps and spells. To gain this benefit, you can’t be blinded, deafened, or incapacitated."

Blinded, Deafened and Incapacitated are listed as Immunities on the character sheet and attributed to Danger Sense.  As I read the text, you can only get the advantage on Dex saves if you are NOT blinded, deafened, or incapacitated, not that Danger Sense grants immunity to those conditions.

QNod

That's not showing up on my barbarian, so it's not affecting all barbs. Is this a new character, and you just leveled it up, or has it had at least 2 levels of barb for a while and the immunities just recently appeared? I assume if it's your character they wouldn't have them added as custom immunities (they'd have an asterisk next to them).

Please post a link to your character sheet so someone can look at it for you.

Link to character: https://www.dndbeyond.com/characters/27527944/bPZdyB

Defenses show immunities: 

  Picture not showing but link is: http://clanmcpherson.net/Capture.PNG

Qnod

As pocketmouse guessed - they have asterisk's next to them which suggests they were added manually. If that's the case they should be able to be removed manually too.

Click on the Defenses frame on the character sheet and expand the Customise dropdown. You should be able to remove them.

Yep, disregard.  User error.  /blush