sell_multiplier only works in some cases

[Exanthiax]

Describe the bug
Does not multiply when using commands or when not selling all.

To Reproduce
Steps to reproduce the behaviour:

1. Using EconomyShopGUI:
   2.1. Run command /sellgui, put items in and sell, it does not multiply sell rewards.
   2.2. Run command /sellall, choose what items or where from, and sell, it does not multiply sell rewards.
   2.3. Run command /shop, head to the item you wish to sell, sell 1. it does not multiply sell rewards. However, selling all does multiply.
2. Be sad.

Expected behaviour
It should multiply sell rewards from all channels.

Screenshots

Server Information (please complete the following information):

• Version: This server is running Paper version git-Paper-191 (MC: 1.19.2) (Implementing API version 1.19.2-R0.1-SNAPSHOT) (Git: 928bcc8)
• Version of plugin and eco. Eco:6.43.5. EcoArmor:7.124.1

Additional context
Nope

[0ft3n]

Describe the bug Does not multiply when using commands or when not selling all.

To Reproduce Steps to reproduce the behaviour:

1. Using EconomyShopGUI:
   2.1. Run command /sellgui, put items in and sell, it does not multiply sell rewards.
   2.2. Run command /sellall, choose what items or where from, and sell, it does not multiply sell rewards.
   2.3. Run command /shop, head to the item you wish to sell, sell 1. it does not multiply sell rewards. However, selling all does multiply.
2. Be sad.

Expected behaviour It should multiply sell rewards from all channels.

Screenshots

Server Information (please complete the following information):

• Version: This server is running Paper version git-Paper-191 (MC: 1.19.2) (Implementing API version 1.19.2-R0.1-SNAPSHOT) (Git: 928bcc8)
• Version of plugin and eco. Eco:6.43.5. EcoArmor:7.124.1

Additional context Nope

Our integration uses PreTransactionEvent from EconomyShopGUI, so ask their developers why does this event not fire in some cases