I had two characters join the same banner and my points reset.
Another bug is Night Market was way, WAY to hard for people to get anything done if they cannot get into groups. Makes the entire event and zone very discouraging to look at let alone play.
If you want to see what all the craftable lights look like in ESO, use this command on PC NA.
/script JumpToSpecificHouse("@Starbridge84", 71)