I added $20,000 into my new start up business checking acct. I then paid myself back. Why is it an expense category in the register if its labeled shareholder equity?

Yes I used owner equity for initial deposit and for withdrawal. I had been using QuickBooks desktop for over 20 years. This is my first time using QuickBooks Online and it’s not nearly as simplified as the desktop version for playing with the transactions and chart of accounts etc. For whatever reason it has owners equity in the chart of accounts but in the check register is listed as an expense. Which seems like a double negative unless I just don’t know how to read the check register properly yet.