What happened? How did it happen? What are the steps to replicate the issue.
When I have saved windows, they show in the tab bar as follows:

However, when I press CMD+N, and then CMD+W, this UI disappears:

It is only after pressing 'Show windows sidebar' then 'Hide windows sidebar' does it show again.
What did you expect to happen? Describe the desired functionality.
Window list in top bar should never disappear.
What version of Orion are you running?
Version 0.99.125-beta (WebKit 616.1.22) Build date Jul 31 2023 MacBook Air (macOS Sonoma 14.0 build 23A344)