As you can see, the position of a sub-elements tab (including Computed, Styles, Layout, Event Listeners, etc.) is accidentally at the right of the HTML area. Before, that tab was placed under of the HTML area.
How can I reset it? I've tried to use right-click and drag the tab, but it still didn't work.
You only need to reduce the width of the Chrome DevTools small window to restore it (when the small window of the DevTools is at a large width, this will also be moved to the right).