What exactly do you mean by "performs a container field"?
There is at least one issue with v13 clients of v12 and interactive container fields, but I can't tell if they fit what you are describing here:
For More Information see: PDFs not interactive in container fields
This is one of many acknowledged bugs that can be found in the Known Bug List thread here in the Report an Issue section of the forum.
It can also be downloaded as a database file from: https://www.dropbox.com/s/jt09b82i0xijbu3/FMP%20Bugs.zip