Titan Panel v5.20.0.90002 w/Retail Warcraft. Note: reload UI does not fix the problem.
Right-click Titan Panel Bar, scroll down to Profiles>>Manage>>Server
On mouse-over of servers in list, I get the following error on some characters consistently, unpredictably or not at all on other characters. Deleting the profile and recreating it doesn't seem to solve the issue either.
Message: ...DropDownMenu\LibUIDropDownMenu\LibUIDropDownMenu.lua:1448: attempt to index field '?' (a nil value)
Time: Mon Nov 30 11:42:27 2020
Count: 4
Stack: ...DropDownMenu\LibUIDropDownMenu\LibUIDropDownMenu.lua:1448: attempt to index field '?' (a nil value)
[string "=[C]"]: ?
[string "@Interface\AddOns\Titan\libs!LibUIDropDownMenu\LibUIDropDownMenu\LibUIDropDownMenu.lua"]:1448: in function `ToggleDropDownMenu'
[string "@Interface\AddOns\Titan\libs!LibUIDropDownMenu\LibUIDropDownMenu\LibUIDropDownMenu.lua"]:229: in function <...DropDownMenu\LibUIDropDownMenu\LibUIDropDownMenu.lua:224>
[string "@Interface\AddOns\Titan\libs!LibUIDropDownMenu\LibUIDropDownMenu\LibUIDropDownMenu.lua"]:320: in function <...DropDownMenu\LibUIDropDownMenu\LibUIDropDownMenu.lua:319>
Locals: (temporary) = true
(temporary) = <function> defined =[C]:-1</function>
None of my characters show this error, I'll watch for it though.
I suspect this was fixed with the 5.20.1.90002 release where the LibUIDropDownMenu libary was updated. I will close this on January 15th unless additional data is provided.