My skip stage is kinda buggy. Why is half of my body stuck in the floor?

I am making an obby and i have made my skip stage gui. It is working but each time i am testing it it teleports me to the next stage but half of my body is stuck to the floor. Sometimes i teleport properly but it is rare to happen.

This is my script:

local service = game:GetService("MarketplaceService")
local dev_product_id = 980377204

local stage_folder = workspace:WaitForChild("Stages")
wait(1)

if workspace:FindFirstChild("Stages") then
    service.ProcessReceipt = function(receiptInfo)
        if receiptInfo.ProductId == dev_product_id  then
            local plr = game:GetService("Players"):GetPlayerByUserId(receiptInfo.PlayerId)
            if plr then
                local leaderboard = plr:FindFirstChild("leaderstats")
                if leaderboard then
                    local stage = leaderboard:FindFirstChild("Stage")
                    if stage then
                        if stage_folder:FindFirstChild("Stage" .. stage.Value+1) then
                            wait() 
                            plr.Character.HumanoidRootPart.CFrame = CFrame.new(stage_folder:FindFirstChild("Stage" .. stage.Value+1).Position)
                            return Enum.ProductPurchaseDecision.PurchaseGranted
                        else
                            return Enum.ProductPurchaseDecision.NotProcessedYet
                        end
                    else
                        return Enum.ProductPurchaseDecision.NotProcessedYet
                    end
                else
                    return Enum.ProductPurchaseDecision.NotProcessedYet
                end
            else
                return Enum.ProductPurchaseDecision.NotProcessedYet
            end
        end
    end
else
    print("Not found Stages In the Stages folder.")
end

This script is located in ServerScriptService.