The Trades sidebar is empty or a trade is missing
The sidebar is empty. A filter hides everything: check the account button, the funnel and the search box. With no accounts, add one in Settings → Accounts.
A closed trade is missing. The list shows 20 closed trades at a time; scroll to the end of Closed, or use the Journal. There is no date filter in the sidebar.
A trade I closed in TWS is still open here. Reconnect to IB; an unseen fill is offered as “IB: N executions are not in the journal” (Missed executions).