
It seems like the rectangle has bright blue border (OK) and is filled with plain white (not OK, shall be transparent / unfilled).
I use FreeCommander portable Version 2009.02a on Win 7 64bit German, default Win 7 Aero theme.
Reproduction rate 100%. Steps:
1) As far as I understood the help file, selecting files with keyboard (not mouse) only works when standard setting has been changed the following (required to reproduce): Settings - Select items - NC-Mode - Select files in NC-Mode SWITCHED ON. All other is standard setting.
2) Now "select" a file by moving a cursor
3) move your mouse cursor over the active file
Cheers, Georg