How do I turn this border off. It appears around a file or folder when i click in an empty space in a lister. It is the same colour as 'selected' background. But it is not selected, just indicating to me the last selected item.
That indicates which item has focus.
You can only hide it in Power Mode, if Preferences / File Display Modes / Power Mode / Always in Keyboard Mode is turned off.
Have just tried power mode and prefer normal mode, so another feature request
option in colors & fonts / files & folders
Files - Focused File
Folders - Focused Folder
This way it can be turned transparent if desired.