Which flavo(u)r(s) of WoW are you using?

Retail

Which server realm(s) are you in?

US

What build number of WoW?

11.2.5.63796

Which version of ATT?

Latest release

What build number of ATT?

4.7.1

What isn't working? What was supposed to happen?

Entered a cave in Vashj'ir at coords 57.10, 28.88 in front of NPC Adarrah, which is when BugGrabber was triggered.

Screenshot

This is inside the cave at the exact spot where the error was triggered.

Steps to reproduce the behavior.

No steps other than what I describes: I logged in, took a couple of minutes to orient where my character was, traveled to the cave, dismounted sea horse, walked to the NPC from the water, then BugSack was triggered.

Are you experiencing any lua errors?

This is what BugGrabber captured in BugSack:

1x AllTheThings/src/Modules/Tooltip.lua:25: attempt to index local 'text' (a nil value)
[AllTheThings/src/Modules/Tooltip.lua]:25: in function <AllTheThings/src/Modules/Tooltip.lua:24>
[AllTheThings/src/Modules/Tooltip.lua]:53: in function <AllTheThings/src/Modules/Tooltip.lua:49>
[AllTheThings/src/Modules/Tooltip.lua]:1049: in function <AllTheThings/src/Modules/Tooltip.lua:858>
[tail call]: ?
[C]: in function 'securecallfunction'
[Blizzard_SharedXMLGame/Tooltip/TooltipDataHandler.lua]:61: in function <...lizzard_SharedXMLGame/Tooltip/TooltipDataHandler.lua:56>
[Blizzard_SharedXMLGame/Tooltip/TooltipDataHandler.lua]:78: in function <...lizzard_SharedXMLGame/Tooltip/TooltipDataHandler.lua:77>
[Blizzard_SharedXMLGame/Tooltip/TooltipDataHandler.lua]:117: in function <...lizzard_SharedXMLGame/Tooltip/TooltipDataHandler.lua:107>
[C]: in function 'SetAttribute'
[Blizzard_SharedXMLGame/Tooltip/TooltipDataHandler.lua]:142: in function <...lizzard_SharedXMLGame/Tooltip/TooltipDataHandler.lua:135>
[Blizzard_SharedXMLGame/Tooltip/TooltipDataHandler.lua]:288: in function <...lizzard_SharedXMLGame/Tooltip/TooltipDataHandler.lua:238>

[C]: in function 'securecallfunction'
[Blizzard_SharedXMLGame/Tooltip/TooltipDataHandler.lua]:235: in function 'ProcessInfo'
[Blizzard_GameTooltip/Mainline/GameTooltip.lua]:964: in function 'SetWorldCursor'
[Blizzard_UIParent/Mainline/UIParent.lua]:1249: in function <...rfaceBlizzard_UIParent/Mainline/UIParent.lua:1169>
[C]: ?

Locals:
text = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = "attempt to index local 'text' (a nil value)"

Anything else?

Nothing else.