Search is new on the website, below Dashboard in the sidebar. It finds Documents, Notes, Spreadsheets, Presentations, Design files, Forms, Kanban Boards, Idea Workspaces, Message Boards, Contacts, To-dos, Invoices, QR Codes and Websites by title in Personal and in every team you belong to. In Command-K, the last entry searches for what you typed. Search in the mobile app now covers every team as well.
Recent work on Dashboard and on the app's Home also covers every team.
When you are in more than one team, each result shows the team it belongs to. Opening one from another team switches to that team first and shows "Now using" and the team's name.
The mobile app now keeps its own Personal or team selection. Switching in the app no longer changes the website, and switching on the website no longer changes the app. The app shows "Now using" and the team's name whenever the selection changes. The team name above a list can be tapped to choose another team. In Your teams, tapping a team always chooses it; Team settings is in More.