Bot can't open chest (does hand animation but does not open chest) [Possible AC issue]

[lupettohf]

• The FAQ doesn't contain a resolution to my issue

Versions

• mineflayer: 4.8.1
• server: works on paper (no plugins) 1.9.2, has issues on paper (constantiam.net) (possible no cheat plus?)
• node: #.#.#

Detailed description of a problem

Bot need to open 5 chests (one on top of the other) and read content. This works with no issues on paper (without ac) but it's not working on a server with Nocheatplus.

Code is coming from https://github.com/lazydancer/idk/

What did you try yet?

• Make the bot look at the chest before opening, adding delay.

Your current code

	async open(chest_type: types.ChestType, chest: number)  {
		if ( this.open_container != null ) {
			await this.bot.closeWindow(this.open_container)
			console.log("closing window")
		}

		await this.move(this.standing_location(chest_type, chest))
		const location = this.chest_to_location(chest_type, chest)
		console.log("Trying to open:" + location + " [" + chest +"]");
		this.bot.lookAt(location, true)
		await new Promise(resolve => setTimeout(resolve, 500));		
		this.open_container = await this.bot.openContainer(this.bot.blockAt(location))		
		await new Promise(resolve => setTimeout(resolve, 500));
		console.log("Done opening:" + location);
		return this.open_container.containerItems().map((o: any) => ({
			item: { 
				id: 0, 
				name: o.name, 
				metadata: o.metadata, 
				nbt: o.nbt, 
				display_name: o.displayName, 
				stack_size: o.stackSize,
			},
			location: { 
				chest_type, 
				chest: chest, 
				slot: o.slot, 
				shulker_slot: null,
			},
			count: o.count,
		}));

	}

Expected behavior

The bot should open the chest. This code works on a "vanilla" paper server on localhost but does not on a server with anticheat.
It has not issues opening the first two chests, with the third it just hangs.

Additional context

inventory 0
Trying to open:(1, 48, 2) [0]
Done opening:(1, 48, 2)
inventory 1
closing window
Trying to open:(1, 49, 2) [1]
Done opening:(1, 49, -2)
inventory 2
closing window
Trying to open:(1, 50, -2) [2]

The bot will hang here, so supposedly on await this.bot.openContainer(this.bot.blockAt(location))