Search lets you find a chat or folder by name from anywhere in your folder hierarchy - no need to navigate to where it's filed.
Searching
The search bar sits at the top of the list at every level - All chats, and inside any folder.
Start typing. Search always runs across all of your chats and folders, no matter which folder you were viewing when you started - the header updates to show "Searching 'All chats'" so it's clear you've switched scope.
Results show both matching folders and chats, in the same list format you're used to (folder icon for folders, chat icon for chats).
Quick filters remain available and functional while search results are showing.
Clearing Search
Click the X in the search bar, or delete your search text. You're returned to the folder you were viewing before you started searching - not reset to All chats.
No Results
If nothing matches, you'll see a "No item to display" message. Clear your search to get back to where you were.