spoiler maybe about beldum

[eclipsedmoon]

so i caught the new shadow beldum and bred it for a shiny and it evolved into the machine guard metang and then mega metagross, anyone know if its a bug or inended?

[Autumn Zephyr]

That's very much a bug, albeit one that got a few laughs around the place when it was first reported. I believe it's supposed to go back to normal in battle? In any case, I'd be surprised if it wasn't fixed in today's patch~