Bitcoin Core GUI balance does not match the amount between addresses in the inbound tab

Bitcoin’s “address” is a bit of a false reputation. It would be better to call something along the line “Invoice Identifier”. Whenever you want to pay another party, we will generate a new address and tell you how to pay. When a transaction pays to an output script belonging to an address, you will see that the corresponding party has paid you. The payments will then be displayed in the (Receive) tab, and the wallet will track the new transaction output that the wallet can spend on future transactions.

Transactional output cannot be partially used. It can only be used entirely. If you want to make a payment, but only have a larger amount of transaction output, the wallet will create a transaction with one input and two outputs. One output to pay the recipient and another output to return to yourself from the transaction output using the remaining funds. This second transaction output is called a Change the output.

Alice has one transaction output equivalent to 1 BTC and I want to send BOB 0.1 BTC.

    Inputs             Outputs
 ----------------------------------
                     Bob 0.1 BTC
  Alice 1 BTC   ↦ 
                     Alice 0.9 BTC ⇐ Change output

The change output is sent directly from the wallet to a new output script generated by the wallet. Because they did not “claim” other parties, the wallet will not surface the “invoice identifier” on the tabs they received. However, the change output is part of the wallet’s funds, contributing to the balance. Like other funds, change output can be used to spend on your wallet. After contributing to balance, the change output will be displayed on an advanced screen such as: Joint trolls A window for manually funding. As far as I know, all actions are working as intended. There is no need to move funds from the change output to the new address.