Two things I would like to see with expanded folders that I don't believe is a feature.
Expand multiple selected folders, rather than expanding each one separate.
FAYT - When the folders are expanded, the FYAT will not search through those folders only the main folders that were expanded.
This is useful to me for example when having a list of music or picture folders (Rock, Country, etc.) and you only want to view a few folders and search for example ACDC.
The hotkey Alt+Down does that already. If you want to be able to do it using the mouse, you could add a toolbar button or context menu to run Go EXPANDBRANCH.
That's the Filter Bar (filtering), not FAYT (finding).
I think we have plans to improve how filtering interacts with subfolders, but at the moment if a filter doesn't match a folder, that folder is hidden, including everything under it.
Filtering within all folders with Flat View is possible now with this code in a button: SearchFolders IN {sourcepath} FOLDERS EVERYTHING SEP=; PATTERN {dlgstring|Find Items in the Source (Everything)\n\nSearch Text:}
@Simplie FWIW, in the latest beta of this command (1.4.9 beta 3) I have greatly improved the filtering with nested items (both by expanded folders and by grouped flat view). You can try it and see if it is what you need.