Ok well that seems like it is working correctly then. However nestopia may not be running full screen. Thus "hiding" attract mode. So you need to check your args line or settings in nestopia. I'll have to grab nestopia to help you better.
I use retroarch or fceux for nes/fds..
I'm installing the retropie image on my pc at the moment so I'm not sure when I can can get back to you.Now I remember why I never used nestopia..it doesn't support 4-player mode...odd the libretro core does...anyhow...
attract mode should come with a pre-configured config file for nestopia...is that the one you are using?
ok to fix this with netopia..here is what you do...
change your args line for your nes emulator configuration in attract mode to this first:
executable nestopia
args -fd "[romfilename]"
if not try this:
find your nestopia.conf file (it has nothing to do with attarctmode...it is in your nestopia folder most likely.) open it in notepad and edit these lines:
fullscreen=0
change it to
fullscreen=1
this makes nestopia to start in full screen after loading the rom/game
now change
disable_gui=0
change it to
disable_gui=1
this makes it to where you can exit with the escape key
try that and let me know