Water float bug. one person doesnt float?

Hello, i have a water float script and it works perfectly fine but there is this one person that will not float. Is there a way to fix this? Here is my script:

local runInterval = 1 / 60 local humanoidFloatDamage = 15 local humanoidFloatDamageFrequency = 1.5 --local waterLevel = -12.5

local clippingPlaneDist = 0.5

--------------------------------[[ Running ]]-----------------------------------

local runService = game:GetService("RunService") local player = game.Players.LocalPlayer

local sGui = script.UnserwaterOverlay sGui.Image.Visible = false sGui.Parent = script.Parent.Parent

function newCharacter() local force = Instance.new("BodyPosition") force.D = 6 force.P = 180 local drag = Instance.new("BodyVelocity") drag.velocity = Vector3.new() drag.maxForce = Vector3.new(1, 0, 1) * 100
local dragRot = Instance.new("BodyAngularVelocity") dragRot.maxTorque = Vector3.new(1, 0, 1) * 100 dragRot.angularvelocity = Vector3.new()

local bodyMovers = {force, drag, dragRot}


local character = player.Character or player.CharacterAdded:wait()
local humanoid = player.Character:WaitForChild("Humanoid")
local torso = character:WaitForChild("Torso")
local camera = workspace.CurrentCamera

local mouse = player:GetMouse()

local floating = Instance.new("BoolValue", character)
floating.Name = "Floating"

local lastDamage = 0

local allParts = {}
local _a = {torso, character:WaitForChild("HumanoidRootPart"), character:WaitForChild("Head"), character:WaitForChild("Left Arm"), character:WaitForChild("Right Arm"), character:WaitForChild("Left Leg"), character:WaitForChild("Right Leg")}
for _, v in pairs(_a) do
    table.insert(allParts, {p = v, mass = v:GetMass()})
end

local characterMass = 0
for _, v in pairs(allParts) do
    characterMass = characterMass + v.p:GetMass()
end
local torsoOnly = {{p = torso, mass = characterMass}}


wait(1)


local function doGui()

    local dist, waterLevel = withinWaterBoundsXZ(camera.CoordinateFrame.p)
    local topFOV = dist < 0  and (camera.CoordinateFrame * CFrame.new(0, math.tan(camera.FieldOfView / 2) * clippingPlaneDist, -clippingPlaneDist)).p.Y
    local bottomFOV = dist < 0  and(camera.CoordinateFrame * CFrame.new(0, math.tan(camera.FieldOfView / 2) * -clippingPlaneDist, -clippingPlaneDist)).p.Y

    if dist < 0 and bottomFOV < waterLevel then
        sGui.Image.Visible = true

        if topFOV < waterLevel then
            sGui.Image.Position = UDim2.new()
        else
            local pos = (waterLevel - bottomFOV) / (topFOV - bottomFOV)
            sGui.Image.Position = UDim2.new(0, 0, 0, mouse.ViewSizeY - mouse.ViewSizeY * pos)
        end
    else
        sGui.Image.Visible = false
    end
end

local characterParts = torsoOnly
local dead = false
humanoid.Died:connect(function()
    characterParts = allParts
    dead = true
end)

local waterLevel 

while character.Parent do
    runService.RenderStepped:wait()

    --[[characterParts = torsoOnly
    if humanoid.Health <= 0 then
        characterParts = allParts
        dead = true
        wait()
    end ]]
    local healthSet

    for _, v in pairs(characterParts) do

        local dist, w = isInWater(v)
        waterLevel = w or waterLevel

        local existingForce = v.p:FindFirstChild("BodyPosition")
        if dist > 0 and not dead then
            if existingForce then
                for _, f in pairs(bodyMovers) do
                    if v.p:FindFirstChild(f.Name) then
                        v.p[f.Name]:Destroy()
                    end
                end

                floating.Value = false
                sGui.Image.Visible = false
            end

            lastDamage = tick()

        elseif dist <= 0 or dead and floating.Value then

            if not existingForce then
                for _, f in pairs(bodyMovers) do
                    if not v.p:FindFirstChild(f.Name) then
                        if f.Name == "BodyPosition" then
                            f.maxForce = Vector3.new(0, 4000 * v.mass, 0)
                            f.position = Vector3.new(0, waterLevel + 0.5, 0)
                        end
                        f:clone().Parent = v.p
                    end
                end
            else
                if v.p:FindFirstChild("BodyPosition") then
                    v.p.BodyPosition.position = Vector3.new(0, waterLevel + 0.5, 0)
                end
            end

            floating.Value = true
            sGui.Image.Visible = true

            if not healthSet then
                healthSet = true
                if tick() - lastDamage > humanoidFloatDamageFrequency then
                    game.ReplicatedStorage.Interaction.DamageHumanoid:FireServer(humanoidFloatDamage)
                    lastDamage = tick()
                end
            end
        end

    end

    if dead then
        break
    end

    doGui()
end

while character.Parent do
    runService.RenderStepped:wait()
    doGui()
end

end

local waterParts = {}

function isInWater(v)

local dist, waterLevel = withinWaterBoundsXZ(v.p.Position)
if dist > 0 then
    return 1
else
    return dist, waterLevel
end

return 1

end

function withinWaterBoundsXZ(pos)

for _, part in pairs(waterParts) do
    if part.Transparency < 1 then
        local corner1 = part.CFrame * CFrame.new(part.Size / -2)
        local corner2 = part.CFrame * CFrame.new(part.Size / 2)
        local cornerSmall = Vector3.new(math.min(corner1.X, corner2.X), 0, math.min(corner1.Z, corner2.Z))
        local cornerBig = Vector3.new(math.max(corner1.X, corner2.X), 0, math.max(corner1.Z, corner2.Z))

        if pos.X > cornerSmall.X and pos.Z > cornerSmall.Z and pos.X < cornerBig.X and pos.Z < cornerBig.Z then

            local dist = pos.Y - part.CFrame.p.Y
            if dist < -40 then
                return 1
            end

            return dist, part.CFrame.p.Y
        end
    end
end

return 1

end

function getWater(perent) for _, v in pairs(perent:GetChildren()) do if v:IsA("BasePart") and (v.Name == "Water" or v:FindFirstChild("WaterForce")) then table.insert(waterParts, v) end getWater(v) end end getWater(workspace)

player.CharacterAdded:wait() player.CharacterAdded:connect(newCharacter) newCharacter()