Little late for a bug report...

[Kal]

But here's an interesting one.

I was fighting the Tree Mother in the Kelp Forest.  The vine/snake things were giving me a lot of trouble, and in my panic I tried to open the menu to chow on some Poultices.  Unfortunately, I hit F1 instead, opening the help menu.  I think I might've died at the same time.

So when the game reloads, I'm back at the Save Crystal...and Naija's gone.  Totally missing.  Hilariously, I can still activate the songs (although the song disc doesn't appear, and there are no effects), and I can trigger the form changes with the hotkeys.

I killed aquaria.exe before I took any screenshots or experimented any more, unfortunately.  Has this ever happened to anybody else?

[Alphasoldier]

Should be simple to reproduce... give me a second.

EDIT: Okay, done and done.

As you said, you die, you 'reappear', but you're invisible, nice bug find. If you would do this while pressing... what was it, the map button? The game crashes.
Thankfully with this, after you died once... you can simply press F1 again and close it and you can see yourself again.

EDIT2: If I remember right, I once had a this bug. Back then I had no clue how it happened, restarted Aquaria for it after almost dying again.
It was a funny thing, but I'm glad that you found this out to clarify.