Can anyone help with an invisibility script?

Ok, so after a few months of trying to come up with a solution on my own I am finally asking for some help. I am trying to make a code which allows players to hide inside of a part while they are standing inside of it, not unlike the bushes found in many MOBAs today. The code itself seems to work when testing locally or on a virtual server, however on a live server the code eventually breaks causing players to either be locked in an invisible or visible state depending on the state the player was in as the code breaks. As the code randomly breaks without throwing an error, I am having trouble pinpointing where the code fails or if there is a bug on the live version of Roblox being used on live servers as the bug has only ever shown on a live server. I would appreciate it if anyone can help find problems with the system I am currently using or any bugs with the code itself that may be causing the visibility lock bug. As additional information, this is a server side script. Here is the code for reference.

local RunService = game:GetService("RunService")
local player = script.Parent
local root = player.HumanoidRootPart
local humanoid = player:WaitForChild("Humanoid")
local replicatedStorage = game:GetService("ReplicatedStorage")



local notInBush = Instance.new("BoolValue", player)
notInBush.Name = "notInBush"
notInBush.Value = true

function objectNotCollidingWith(part1, part2) --checks if two parts are not colliding
	local answer = 0
	for _, object in pairs(part1:GetTouchingParts()) do
		if object.Name == part2 then
			answer = answer + 1
		end
	end
	return answer
end



function setTransparency(char, value) --sets the transparency of all parts of a player
	for _, child in pairs(char:GetChildren()) do
		if child:IsA('Accessory') and child:FindFirstChild("Handle") then
			child.Handle.Transparency = value
		elseif child:IsA('BasePart') then
			if child.name == 'HumanoidRootPart' then
			else
				child.Transparency = value
			end
		end
	end
end

function hideInBush(hit) --makes player invisible
	if hit.name == 'Grass' then
		if player then
			local head = player:FindFirstChild("Head")
			local face = head:FindFirstChild("face")
			if head and game.Players:GetPlayerFromCharacter(player) and notInBush.Value == true and head.Transparency < 1 and player.isShooting.Value == false then
				for t = 0, 1, .25 do
					if face then face.Transparency = t end
					setTransparency(player, t)
					wait(0.025)
				end
				notInBush.Value = false
			end
		end
	end
end

function doubleCheckGrassLeave() --makes player visible again
	if objectNotCollidingWith(root, "Grass") <= 0 and notInBush.Value == false then
		if player then
			local head = player:FindFirstChild("Head")
			local face = head:FindFirstChild("face")
			if head and game.Players:GetPlayerFromCharacter(player) and notInBush.Value == false and head.Transparency >= 1 then
				for t = 1, 0, -.25 do
					if face then face.Transparency = t end
					setTransparency(player, t)
					wait(0.025)
				end
				notInBush.Value = true
			end
		end
	end
	if humanoid.Health <= 0 then
		script:Destroy()
		script.Disabled = true
	end
end





root.Touched:Connect(hideInBush)
RunService.Heartbeat:Connect(doubleCheckGrassLeave)

Thank you in advance if you can offer any advice or help