This happens only if you are in Borean Tundra. If you are in a different zone, it will show.

There was a similar bug with #3229 #4059

having the same problem it was fine in Dragonblight but in Borean Tundra, I'm getting lua error and it shows no quest by zone.
6x ...dOns\Questie\Modules\Journey\QuestieJourneyUtils.lua:14: bad argument #1 to 'pairs' (table expected, got nil) [string "=[C]"]: in function pairs'
[string "@Questie\Modules\Journey\QuestieJourneyUtils.lua"]:14: in function GetSortedZoneKeys' [string "@Questie\Modules\Journey\tabs\QuestsByZone\QuestsByZoneTab.lua"]:86: in function <...odules\Journey\tabs\QuestsByZone\QuestsByZoneTab.lua:77> [string "@Questie\Modules\Journey\tabs\QuestsByZone\QuestsByZoneTab.lua"]:44: in function DrawTab'
[string "@Questie\Modules\Journey\QuestieJourneyPrivates.lua"]:72: in function HandleTabChange' [string "@Questie\Modules\Journey\QuestieJourney.lua"]:89: in function <...ceQuestie\Modules\Journey\QuestieJourney.lua:89> [string "=[C]"]: ? [string "@Atlas\Libs\AceGUI-3.0\AceGUI-3.0-41.lua"]:72: in function <Atlas\Libs\AceGUI-3.0\AceGUI-3.0.lua:70> [string "@Atlas\Libs\AceGUI-3.0\AceGUI-3.0-41.lua"]:306: in function Fire'
[string "@bartender4\libs\AceGUI-3.0-41\widgets\AceGUIContainer-TabGroup.lua"]:342: in function SelectTab' [string "@Bartender4\libs\AceGUI-3.0-41\widgets\AceGUIContainer-TabGroup.lua"]:200: in function <...libs\AceGUI-3.0\widgets\AceGUIContainer-TabGroup.lua:197>

This is no longer an issue.