Spontaneous Edifice doesn't count to building achievements
I have the same bug as here: forum.dashnet.org/discussion/16873/spontaneous-edifice-doesnt-unlock-achievements (i can't post links yet) but I didn't want to bump a post in wrong section.
Spontaneous Edifice gave me 400th Prism but I didn't get any achievement. I only realized when notification showed up the next time I turned on CC.
I think it's a minor bug because it disappears in next session, but I just want You to know ;)