Raycasting doesn't work with filtering enabled?

My building system needs raycasting and it works fine in studio but not in game, in server it detects very weird things like a union where it should say part and other weird things. Here is the script, it's a local script inside the tool (inside replicated storage). My destroy tool has the same problem

Placement

local tool = script.Parent
local player = game:GetService("Players").LocalPlayer
local Mouse = player:GetMouse()
Debounce = false
pressed = false
cancelled = false
canPress = false
 
tool.Equipped:connect(function(mouse)
	print("Tool equipped!")
 
	mouse.Button1Down:connect(function()
		print("Mouse pressed!")
		
		if Debounce == false then
				
			Debounce = true		
			
			local ray = Ray.new(tool.Handle.CFrame.p, (mouse.Hit.p - tool.Handle.CFrame.p).unit * 30)
			local part, position = workspace:FindPartOnRay(ray, player.Character, false, true)
		
			PreviewPart = script.Parent.Wooden_Floor:Clone()
			PreviewPart.Name = "Preview part"
			PreviewPart.Transparency = 0.5
			PreviewPart.Anchored = true
			PreviewPart.CanCollide = false
			PreviewPart.Position = position + Vector3.new(0, 0.375, 0)--  + Vector3.new(0,part.Size.Y/2,0)
			PreviewPart.Parent = workspace
			
			customBuild = Instance.new("Part")
			customBuild.Transparency = 1
			customBuild.Anchored = true
			customBuild.CanCollide = false
			customBuild.Name = "CustomBuild"
			customBuild.Parent = PreviewPart
		
			wait(1)
			
			canPress = true	
		end
	end)
end)

while wait() do
	if Debounce == true then

			Mouse.Button1Down:connect(function()
				if canPress == true then
					pressed = true
				end
			end)
			Mouse.Button2Down:connect(function()
				if canPress == true then
					cancelled = true
				end
			end)
			
		if cancelled == true then
			Debounce = false
			cancelled = false
			pressed = false
			canPress = false
			for i,v in pairs(workspace:GetChildren()) do
				if v.Name == "Preview part" then
					v:Destroy()
				end
			end
			print(cancelled)
		elseif pressed == true then
			Debounce = false
			cancelled = false
			pressed = false
			canPress = false
			for i,v in pairs(workspace:GetChildren()) do
				if v.Name == "Preview part" then
					v.Transparency = 0
					v.Name = "Floor"
					v.CanCollide = true
				end
			end
		end
		if PreviewPart ~= nil then
			local list = {player.Character,PreviewPart}
			local Player = game.Players:GetPlayers()
			local mouse = player:GetMouse()
			local ray = Ray.new(tool.Handle.CFrame.p, (mouse.Hit.p - tool.Handle.CFrame.p).unit * 30)
			local part, position = workspace:FindPartOnRayWithIgnoreList(ray, {player.Character,PreviewPart}, false, true)
			PreviewPart.Position = position --+ Vector3.new(0, 0.375, 0)
		end
	end
end

Destroy

local tool = script.Parent
local player = game:GetService("Players").LocalPlayer
local Mouse = player:GetMouse()
Debounce = false
pressed = false
cancelled = false
canPress = false
 
tool.Equipped:connect(function(mouse)
	print("Tool equipped!")
 
	mouse.Button1Down:connect(function()
		print("Mouse pressed!")
		
		if Debounce == false then
			
			local ray = Ray.new(tool.Handle.CFrame.p, (mouse.Hit.p - tool.Handle.CFrame.p).unit * 30)
			local part, position = workspace:FindPartOnRay(ray, player.Character, false, true)
	
			if part then
				print(part)
				if part:FindFirstChild("CustomBuild") then
					part:Destroy()
				end
			end
		end
	end)
end)

Filtering is enabled