auction house addons don't split stacks

[mrBugger]

Describe the bug
using aux, auctionator or auctioneer all have the same problem: when i want to post a stack of 20, into 2 stacks of 10 with item price e.g. 1g, it posts 1 stack of 20 and with STACK price 1g.
I have disabled all addons except the AH addon and the problem remains the same.

Game Server
everlook

Hermes Proxy Version
Release v3.7 (2023-01-30)

[RushJet1]

I have also experienced this issue. It still happens in v3.8.

[janfokke]

Relates to #358

The vanilla client only supports item GUIDs, so item count is ignored (item count is probably something addons can use).
https://github.com/vmangos/core/blob/dd267cfe9681d5a5219bdd30f554c995686b3534/src/game/Handlers/AuctionHouseHandler.cpp#L249

The classic client has an additional field for item count.

HermesProxy/HermesProxy/World/Server/Packets/AuctionPackets.cs

Line 407 in 841a26f

UseCount = data.ReadUInt32();

This is ignored here, since the vanilla server doesn't support it.

HermesProxy/HermesProxy/World/Server/PacketHandlers/AuctionHandler.cs

Line 190 in 841a26f

packet.WriteGuid(item.Guid.To64());

Vanilla auction house plugins stacked the items first in the inventory and then placed them on the auction house. I wonder if it is possible to fix this issue.