Pathfinding flying (triple jumping)?

So yeah i was following path finding tutorials and messing around and well my npc decided to fly / triple jump did i write my code wrong or is it just roblox glitching / i placed walls wrong. GIF There are 2 invis walls on each side no others Code:

local PathfindingService = game:GetService("PathfindingService")

local plr = script.Parent
local humanoid = plr.Humanoid
local destination = game.Workspace.End

local path = PathfindingService:CreatePath()

local waypoints
local currentWaypointIndex = 0

local function showwaypoints()
    local max = #waypoints
    for i, v in ipairs(waypoints) do
        print(i)
        print(v)
        local part = Instance.new("Part")
        part.Shape = "Ball"
        part.Material = "Neon"
        part.Name = tostring(i)
        part.Size = Vector3.new(0.6, 0.6, 0.6)
        part.Parent = game.Workspace.WayPoints
        part.Position = v.Position + Vector3.new(0, 3.5, 0)
        part.Anchored = true
        part.CanCollide = false
        if i == 1 then
            part.BrickColor = BrickColor.new("Lime green")
        elseif i == max then
            part.BrickColor = BrickColor.new("Really red")
        end
    end
end

local function followPath(destinationObject)
    print("follow")
    path:ComputeAsync(plr.HumanoidRootPart.Position, destinationObject.Position)
    waypoints = {}

    if path.Status == Enum.PathStatus.Success then
        waypoints = path:GetWaypoints()
        showwaypoints()
        currentWaypointIndex = 1
        humanoid:MoveTo(waypoints[currentWaypointIndex].Position)

        if waypoints[currentWaypointIndex].Action == Enum.PathWaypointAction.Jump then
            humanoid:ChangeState(Enum.HumanoidStateType.Jumping)
        end
    else
        humanoid:MoveTo(plr.HumanoidRootPart.Position)
    end
end

local function onWaypointReached(reached)
    print("reached")
    if reached and currentWaypointIndex < #waypoints then
        currentWaypointIndex = currentWaypointIndex + 1
        humanoid:MoveTo(waypoints[currentWaypointIndex].Position)
        if waypoints[currentWaypointIndex].Action == Enum.PathWaypointAction.Jump then
            humanoid:ChangeState(Enum.HumanoidStateType.Jumping)
        end
    end
end

local function onPathBlocked(blockedWaypointIndex)
    if blockedWaypointIndex > currentWaypointIndex then

        print("blocked")
        followPath(destination)

    end
end


path.Blocked:Connect(onPathBlocked)

humanoid.MoveToFinished:Connect(onWaypointReached)

followPath(destination)

also if you've got any script improvements / anyways to fix it please comment / reply!