Lister layout changed

Dopus app was sitting open for a while. When I went back to it it had changed. Now there is only a directory listing with no right facing arrow heads to click and open all subdirectories. I have to click on the directory and subdirectories will open with all other higher and lower directories not being displayed. I hope this explains it but if not I can provide a screenshot.

Thanks

A screenshot would definitely be useful. You can drag or paste them into the post editor here.

This problem has been resolved.