This is not a general bug. This is major.

When I tried to evolve my Ishizumai, it said:

This pokemon will evolve into a . Will you Evolve it or Return?

I cliked evolve, and then it came to a screen where the word Ishizumai was flashing. Then, I checked back at my computer screen to admire the Iwaperasu, and THE THING HAD VANISHED. HELP ME PLEASE.

Also, click where my Ishizumai adopt SHOULD be, next to Uniran.

It has left you, you have ignored the poor thing.
Freeze will do his thing, don't worry mate.

Lolz, he better do it. That Ishizumai was my very first Gen V pokemon overworld designed.

It is not showing my in your signature for a overworlded sprite so it much be a glitch in the system.

Note the title.

...Why'd you click it when it said nothing? ...Think man!

Eh, in a week I think I'll work on an incremental release to fully stabilize anything, since I did take a lot of shortcuts before.

For the issue at hand, it was a simple typo on my part - check 'em now and everything should be in order (as should all future evolutions).