I opened a ticket to Leatrix plus too, maybe it's a conflict ?

1x Leatrix_Plus\Leatrix_Plus-1.13.77.lua:5947: Attempt to access forbidden object from code tainted by an AddOn
[C]: in function GetName' Leatrix_Plus\Leatrix_Plus-1.13.77.lua:5947: in function showTooltip'
ClassicCodex\map.lua:101: in function <ClassicCodex\map.lua:99>

Locals:
(*temporary) = SecureTransferDialog {
0 =
MoneyLabel = {
}
CautionIcon = {
}
Text = {
}
Button2 = {
}
Button1 = {
}
}