Describe the bug
Got an error when trying to untrack a quest.

Do you have an error log of what happened?
Date: 2019-04-17 20:10:53
ID: 1
Error occured in: Global
Count: 284
Message: ..\AddOns\EskaTracker\API\ContextMenu.lua line 372:
attempt to compare nil with number
Debug:
EskaTracker\API\ContextMenu.lua:372:
EskaTracker\API\ContextMenu.lua:366
Locals:
f = EKT-ContextMenu {
0 =
_ekt_objects =

{
}
}
top = nil
left = nil
right = nil
bottom = nil
(*temporary) = EKT-ContextMenu {
0 =
_ekt_objects = {
}
}
(*temporary) = "attempt to compare nil with number"
self = {
_Frame_Frame = EKT-ContextMenu {
}
_Frame_BaseHeight = 75
actionsArgs = {
}
_Frame_Hover = false
items = {
}
anchorFrames = {
}
_Frame__pendingLayout = false
_Frame_Height = 198
_Frame_Width = 125
arrow = {
}
}

To Reproduce
Steps to reproduce the behavior:

1. Right click on a quest
2. Left click on a quest
3. Untrack using the main window and not the little window.
4. Error shows up

Expected behavior
I expect to have no error.