So the other day, IrcDirk advised me to get https://wow.curseforge.com/projects/wowgatheringnodes in this post mikepauer/Carbonite.Gathermate2_Data#1 However, since I've gotten it, my world quests on both my lvl 120 toons is randomly disappearing. To get them to show up, I have to reload my game and with a little luck they show up but ONLY for the area that my toon is in.. Meaning if I'm in Zuldazar then I see WQ's there, but not in Nazmir, Vol'Dun, Tiragarde Sound, Drustvar or Stormsong Valley.
It may just be a coincidence that it's collided with getting wowgatheringnodes addon, but what else could it be... I had no issues with WQ's showing on my Carbonite World Map, before I got the addon.
Also I've deleted Carbonite Items, Notes, Warehouse and Info only yesterday, but I can't imagine that should have anything to do with the WQ's vanishing randomly, as I haven't had either Items, Notes, Warehouse or Info turned on since late august this year.

I had made 1 more changed, in trying to figure out part of this: mikepauer/Carbonite#132 I'm going to add a screenie so if anyone have a similar issue to mine, then they can check out what I'd done and did to resolve my own stupid mistake.

That World Quest List is found by clicking on the first tiny arrow on the Quest Tracker and selecting Open World Quest List. That'll give you the window you see on the screenshot and clicking on it's tiny little arrow (menu) ... If you as I had selected Current Zone Only, then if you untick that you as I will then again see world quests in more than just the area you're in.

I'd simply forgotten that I'd gone there and made a difference in where I would see WQ's.
I feel stupid.