Move & copy tabs between sessions — drag a tab onto any session to move it, or hold Ctrl while dropping to copy. Same actions are on the tab's right-click menu.
Search across everything — the header search box filters sessions by name, title, or URL and collects every matching tab, open o* closed, into a Search results list. Click a result to jump straight to it.
Native tab groups are preserved — a group's name, color, and collapsed state are saved with the session and recreated on restore, and the sidebar shows tabs under colored group headers. (Firefox 139+ / Chromium.)
Current session highlight — the session for the window you're in is marked with an accent stripe and a "current" badge.
Reliability fixes — the sidebar no longer goes blank after the browser sits idle, and session names in the window title are now kept in place even after idle or if another titling extension overwrites them.