When I first installed some beta of FlashFXP I noticed that the Parent directory was shown as a folder. After restart it was showing like it is supposed to. Now I uninstalled every FlashFXP and installed FlashFXP build 1003 (newest atm) and it still happens.
:
Parent directory is supposed to show an arrow up
Parent directory acts the first time like on the screenshot (folder) till you restart flashfxp than it will not happen anymore
Hope this will be enough information