Not sure which forum to put this in, hopefully one of the devs will read it:
When you beat the energy god in the energy temple and leave via the path behind him, about halfway through the NEXT screen, you get a map marker with I think the energy god's face on it. There is no energy god in this screen, he was in the last screen.
I could be mistaken about this, but I don't see anything interesting where the map marker creates itself. All the other bosses' markers activate where they die, so I thought this was a little weird.
Obviously a tiny aesthetic issue, if it is true, but yeah something to fix

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