I still have the version 12.0.4 files (I haven't emptied my trash yet).
Let me know if you need them (my email address is in my profile).
Beatrice Beaubien, PhD
i2eye, Toronto, Canada
FileMaker Business Alliance
FileMaker 12 Certified Developer
Knowledge Translation Certified Professional
This is almost definitely a bug with FM Go 12.0.5. I did nothing but switch back to 12.0.4 (thanks Beatrice!!) and everything began working correctly again. Bug report submitted, hope it's fixed quickly!
Well, according to this: http://forums.filemaker.com/posts/60014e58e2#214788 it's not really a bug so much as a feature. The problem with this change is that it makes the FM Go app even more different from the desktop app. But it looks like it was an intentional change and we just need to deal with it.