Nevermind, didn't notice there was a SL branch, updated and no bug.

First time it has happened since arriving in The Maw, the quest was called A Moment's Respite, will update if other quests cause the bug as well.

1x LastSeen\Handlers\QuestHandler.lua:24: attempt to call global 'GetQuestLogTitle' (a nil value)
[string "@lastseen\Handlers\QuestHandler.lua"]:24: in function `GetQuestInfo'
[string "@lastseen\Main.lua"]:288: in function <LastSeen\Main.lua:71>

Locals:
questIndex = 59756
(*temporary) = nil
(*temporary) = 59756
(*temporary) = "attempt to call global 'GetQuestLogTitle' (a nil value)"
questTitle = nil
select = defined =[C]:-1
addonTbl =

{
currentMap = "The Maw"
AddCreatureByNameplate = defined @lastseen\Handlers\NameplateHandler.lua:27
UpdateWidget = defined @lastseen\Classes\Widget.lua:91
LoadSettings = defined @lastseen\Settings.lua:36
isAutoLootPlusLoaded = false
Help = defined @lastseen\Handlers\CommandHandler.lua:94
ignoredItemCategories = {
}
CreateFrame = defined @lastseen\Classes\Frame.lua:110
New = defined @lastseen\Handlers\ItemHandler.lua:18
GetQuestInfo = defined @lastseen\Handlers\QuestHandler.lua:23
GetTable = defined @lastseen\Handlers\FunctionHandler.lua:112
whitelistedItems = {
}
maxHistoryEntries = 20
target = ""
SetLocale = defined @lastseen\L.lua:11
removedItems = {
}
Search = defined @lastseen\Handlers\CommandHandler.lua:39
DataIsValid = defined @lastseen\Handlers\FunctionHandler.lua:23
GetTableKeyFromValue = defined @lastseen\Handlers\FunctionHandler.lua:75
Contains = defined @lastseen\Handlers\FunctionHandler.lua:85
showSources = false
wasUpdated = false
lootFast = true
rarity = 2
mode = "Normal"
ignoredItems = {
}
InitializeSavedVars = defined @lastseen\Handlers\FunctionHandler.lua:44
Update = defined @lastseen\Handlers\ItemHandler.lua:60
GetCurrentMap = defined @lastseen\Handlers\MapHandler.lua:7
isFasterLootLoaded = false
Remove = defined @lastseen\Handlers\CommandHandler.lua:7
OnTooltipSetItem = defined @lastseen\Handlers\TooltipHandler.lua:7
isLastSeenLoaded = true
DateFormat = defined @lastseen\Handlers\FunctionHandler.lua:133
L = {
}
CreateWidget = defined @lastseen\Classes\Widget.lua:17
GetCount = defined @lastseen\Handlers\FunctionHandler.lua:6
Manual = defined @lastseen\Handlers\CommandHandler.lua:99
itemsToSource = {
}
AddCreatureByMouseover = defined @lastseen\Handlers\NameplateHandler.lua:6
RollHistory = defined @lastseen\Handlers\FunctionHandler.lua:121
doNotLoot = false
AddItem = defined @lastseen\Handlers\ItemHandler.lua:140
lootSlots = 1
GetItemInfo = defined @lastseen\Handlers\FunctionHandler.lua:146
isInInstance = false
doNotIgnore = false
doNotUpdate = false
ExtractItemLink = defined @lastseen\Handlers\FunctionHandler.lua:55
locale = "enUS"
query = ""
AddQuest = defined @lastseen\Handlers\QuestHandler.lua:12
events = {
}
}