ggv's file-open dialog initially comes up with a '.' in the filename box. Normal files can't be seen without clearing the box and tabbing, or, for people who aren't familiar with gtk's arcane file dialogs, the obvious workaround is to type the filename manually. This is with both the release and rawhide versions of ggv.
Current release of ggv has this fixed. It will be available in the next version.
This bug is still present in the Wolverine build of ggv.
And in 7.1-release
Still can't duplicate this at all. 7.2 ggv seems to be fine.