Mouse wont detect object anymore until I pick up another?

Title is confusing yea. What I mean is, When I pick up an object and then drop it, the mouse wont detect the same object anymore. But when I pick up another object and drop it, the mouse is able to detect the previous object now, but not the current one.

Here's an illustration of what I'm talking about. https://gyazo.com/308007f5ee8e64bcb3346d698e1a0d87

Script:

--Variables
local RunService = game:GetService("RunService")
local InputService = game:GetService("UserInputService")
local CP = game:GetService("ContentProvider")
local Debris = game:GetService("Debris")

local Player = game.Players.LocalPlayer
local Camera = game.Workspace.CurrentCamera
local Mouse = Player:GetMouse()
repeat wait() until Player.Character
local Character = Player.Character
local Humanoid = Character:WaitForChild("Humanoid")
local Head = Character:WaitForChild("Head")
local Torso = Character:WaitForChild("Torso")

local DragTarget
local DragMinDistance = 8
local DragTargetDistance = 4

local Crosshair = 754262000
local SelectionCrosshair = 754262000

local mousehoverdist = 15

--DragObject
InputService.InputBegan:Connect(function(input)
    if input.KeyCode == Enum.KeyCode.E then
        if not DragTarget and Mouse.Target ~= nil then
            local t = Mouse.Target
            print(t.Name)
            if t and t.Parent and not t.Parent:FindFirstChild("Humanoid") and t.Anchored == false and t.Transparency < 1 and t.Size.magnitude <= 40 and (Head.Position-t.Position).magnitude <= DragMinDistance+t.Size.magnitude/2 and t:FindFirstChild("Object") then
                if t:FindFirstChild("Object").Value == true then
                    DragTarget = t
                    local bp = Instance.new("BodyPosition", DragTarget)bp.Name = "DragPosition"
                    bp.MaxForce = Vector3.new(6000,6000,6000)
                    bp.P = 5500
                    bp.D = 400
                    Mouse.TargetFilter = DragTarget
                    DragTargetDistance = (Head.CFrame.p-DragTarget.Position).magnitude
                    bp.Position = (Head.Position + (Head.CFrame.p - Mouse.Hit.p).unit*-8)
                    local bg = Instance.new("BodyGyro", DragTarget)bg.CFrame = DragTarget.CFrame
                    bg.MaxTorque = Vector3.new(0,0,0)
                    bg.Name = "DragGyro"
                    coroutine.wrap(function()
                        while true do wait()
                            if DragTarget ~= nil then
                                dragMove()
                            else break
                            end
                        end
                    end)()
                end
            end
        elseif DragTarget ~= nil then
            DragTarget.Velocity = Vector3.new(0,0,0)
            DragTarget.DragPosition:Destroy()
            DragTarget.DragGyro:Destroy()
            DragTarget = nil
        end
    end
end)

function dragMove()
    if DragTarget then
        DragTargetDistance = (Head.CFrame.p-DragTarget.Position).magnitude/2
        DragTarget.DragPosition.Position = (Head.Position + (Head.CFrame.p - Mouse.Hit.p).unit*-8)
    end
    if Mouse.Target ~= nil then
        if Mouse.Target:FindFirstChild("ClickDetector") and (Mouse.Target.CFrame.p - Torso.CFrame.p).magnitude <= mousehoverdist then
            Mouse.Icon = "rbxassetid://"..tostring(SelectionCrosshair)
        else
            Mouse.Icon = "rbxassetid://"..tostring(Crosshair)
        end
    end
end
Mouse.Move:connect(dragMove)

I'm confused, I'm just thinking it's a bug, or some local error.