Issue with region3

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1 
local hitbox = script.Parent.magicForestHitbox

while wait() do
	local players = game.Players:GetPlayers()
	local region = Region3.new(hitbox.Position - (hitbox.Size/2), hitbox.Position + (hitbox.Size/2))
	
	local parts = game.Workspace:FindPartsInRegion3(region)
	for i, v in pairs(parts) do
		if v.Name == "HumanoidRootPart" then
			if v.Parent:FindFirstChild("Human") then
				--call remote event with v.parent.name
				print("player found")
				plr = table.find(players, v.Parent.Name)
				table.remove(players, plr)
			end
		end
	end
	for i, player in pairs(players) do
		print("Player not in region3")
		--call remote event to stop music
	end
end

For some reason, it decides sometimes I’m in the region, sometimes I’m not. When it isn’t supposed to. The region is the correct size, I’ve verified that, so I have no idea what’s going on? No errors or anything, either, just when I 'm in the region3 it starts to sometimes say I’m in it and sometimes out of it.