I was enhancing a weapon, and I selected it through the axe filter (no other weapon type was on screen) and it showed the weapon I was enhancing. When I gave up the other weapons I wanted to sacrifice and hit the "Enhance" button, it showed that I was enhancing a different weapon type, and it also got rid of the weapon I was upgrading. Totally not cool

That's odd. It could have been an error, due to a previous update that might have happened before that.