https://youtu.be/YWiEo258JMg

Either from the main quest frame or watch frame. You can unwatch all from the menus in header of watch frame but not the quest themselves.

Edit: getting the following bug

665x Carbonite.Quests/NxQuest.lua:7908: attempt to index local 'quest' (a nil value)
[string "@Carbonite.Quests/NxQuest.lua"]:7908: in function UpdateIcons' [string "@Carbonite/NxMap.lua"]:5104: in function Update'
[string "@Carbonite/NxMap.lua"]:4026: in function <Carbonite/NxMap.lua:3910>

Locals:
self =

{
IconTracking = {
}
UnpackCategory = defined @Carbonite.Quests/NxQuest.lua:10613
DailyTypes = {
}
IsTargeted = defined @Carbonite.Quests/NxQuest.lua:10379
Menu_OnTrack = defined @Carbonite.Quests/NxQuest.lua:3296
GetQuestReward = defined @Carbonite.Quests/NxQuest.lua:3350
DecodeComRcv = defined @Carbonite.Quests/NxQuest.lua:11249
MsgNotInDB = defined @Carbonite.Quests/NxQuest.lua:5289
Watch = {
}
PartyStartSend = defined @Carbonite.Quests/NxQuest.lua:11511
SortQuests = defined @Carbonite.Quests/NxQuest.lua:4364
NullQuest = defined @Carbonite.Quests/NxQuest.lua:11658
CheckQuestSE = defined @Carbonite.Quests/NxQuest.lua:3235
GetFromPlyr = defined @Carbonite.Quests/NxQuest.lua:5103
Custom = {
}
TTChange = {
}
TooltipProcess2 = defined @Carbonite.Quests/NxQuest.lua:5398
IdToCurQ = {
}
PerColors = {
}
GetClosestObjectivePos = defined @Carbonite.Quests/NxQuest.lua:10893
RecordQuestsLog = defined @Carbonite.Quests/NxQuest.lua:3536
ExtractTitle = defined @Carbonite.Quests/NxQuest.lua:4340
CalcCNumMax = defined @Carbonite.Quests/NxQuest.lua:4161
UnpackObjective = defined @Carbonite.Quests/NxQuest.lua:10651
FindCur = defined @Carbonite.Quests/NxQuest.lua:4827
TooltipProcess = defined @Carbonite.Quests/NxQuest.lua:5374
SelectBlizz = defined @Carbonite.Quests/NxQuest.lua:3404
UnpackNext = defined @Carbonite.Quests/NxQuest.lua:10604
ShowUIPanel = defined @Carbonite.Quests/NxQuest.lua:5902
CapturePlyrData = {
}
GetObjectiveType = defined @Carbonite.Quests/NxQuest.lua:10664
PartyUpdateTimer = defined @Carbonite.Quests/NxQuest.lua:11504
MapChanged = defined @Carbonite.Quests/NxQuest.lua:4053
OnParty_members_changed = defined @Carbonite.Quests/NxQuest.lua:11345
TrackedAchievements = {
}
UpdateQuestDetails = defined @Carbonite.Quests/NxQuest.lua:8348
DailyIds = {
}
CalcDesc = defined @Carbonite.Quests/NxQuest.lua:4301
QLocColors = {
}
CalcPreviousDone = defined @Carbonite.Quests/NxQuest.lua:4204
AccessAllQuests = defined @Carbonite.Quests/NxQuest.lua:3484
IconOnMouseDown = defined @Carbonite.Quests/NxQuest.lua:8293
UpdateGiverIconMenu = defined @Carbonite.Quests/NxQuest.lua:10274
WatchAtLogin = defined @Carbonite.Quests/NxQuest.lua:4934
CreateLink = defined @Carbonite.Quests/NxQuest.lua:4332
LightHeadedAttach = defined @Carbonite.Quests/NxQuest.lua:5970
RecordQuestAcceptOrFinish = defined @Carbonite.Quests/NxQuest.lua:4486
Goto = defined @Carbonite.Quests/NxQuest.lua:4964
InitQuestCharacter = defined @Carbonite.Quests/NxQuest.lua:2195
RealQEntries = 55
AcceptQuest = defined @Carbonite.Quests/NxQuest.lua:3330
GetHistoryTimer = defined @Carbonite.Quests/NxQuest.lua:4254
Requirements = {
}
TellPartyOfChanges = defined @Carbonite.Quests/NxQuest.lua:4749
Cols = {
}
CreateGiverIconMenu = defined @carbonit