Builder got a refreshed search popover. It’s not even a GtkPopover anymore and instead uses AdwDialog.
You can use some of the typical “prefixes” to filter search results or do nothing and get everything mixed together.
For example, prefix the search with @ to limit the results to indexed symbol names. Quick preview is still presented side-by-side.
You can also search for documentation now if jumping to the search panel is too much work. Just prefix with ? and you’re ready to go.
Sometimes it can be handy to run various build actions using the search popover as well. Many of the menu items are searchable. Just prefix the search query with >.
Enjoy!