Read directory tracks not showing on screen

used to work but now when Load audio book with control d tracks not showing on screen. ( tried to upload screen shot below)

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You have probably applied a filter. The status bar shows that you have loaded 24 files but none is shown.
Press F3 to switch off the filter and see whether the files appear now.

okay figured it out , Although there is nothing in the filter box at bottom , went to view and unchecked filter and the tracks showed up on screen again.

Perhaps there is a space, dot, something like that ...