Fix InstanceStream exploit

Pronghorn/New.luau

@@ -410,27 +410,41 @@ end
 --- Creates and returns an InstanceStream.
 --- @return InstanceStream -- The new InstanceStream.
 function New.InstanceStream(): InstanceStream<...any>
+	local replicators: {[Player]: RemoteEvent} = {}
+
 	local actions: InstanceStream<...Instance> = {
 		Instances = {};
 
 		Start = function(self: InstanceStream<...Instance>, players: Player | {Player}, instances: {Instance}): string
 			if IS_CLIENT then error("InstanceStream.Start cannot be called on the client", 0) end
 
+			table.clear(self.Instances)
+			for index, instance in instances do
+				self.Instances[index] = instance
+			end
+
 			local uid = `{HttpService:GenerateGUID(false)}_{#instances}`
 
 			for _, player in (if type(players) == "table" then players else {players}) :: {Player} do
-				local container = New.Instance("RemoteEvent", `__instanceStream_{uid}`) :: RemoteEvent
+				if not player.Parent then continue end
 
-				for _, instance in instances do
-					table.insert(self.Instances, instance)
-					New.Instance("ObjectValue", container, {Value = instance})
+				local replicator = New.Instance("RemoteEvent", `__instanceStream_{uid}`) :: RemoteEvent
+
+				if replicators[player] then
+					replicators[player]:Destroy()
 				end
+				replicators[player] = replicator
 
-				container.Parent = player.PlayerGui
+				for _, instance in instances do
+					New.Instance("ObjectValue", replicator, {Value = instance})
+				end
 
-				container.OnServerEvent:Once(function()
-					container:Destroy()
+				replicator.OnServerEvent:Once(function()
+					replicator:Destroy()
+					replicators[player] = nil
 				end)
+
+				replicator.Parent = player.PlayerGui
 			end
 
 			return uid

Pronghorn/init.luau

@@ -31,7 +31,7 @@
 ║                           ██████▀██▓▌▀▌ ▄     ▄▓▌▐▓█▌                ║
 ║                                                                      ║
 ║                                                                      ║
-║                    Pronghorn Framework  Rev. B73                     ║
+║                    Pronghorn Framework  Rev. B74                     ║
 ║             https://github.com/Iron-Stag-Games/Pronghorn             ║
 ║                GNU Lesser General Public License v2.1                ║
 ║                                                                      ║