Does the minimus containment version of a binding spell prevent the target from taking actions?
I imagine some GMs might say yes, but I'm thinking the answer is, or at least should be, no.
There's nothing in the spell under that section (or elsewhere in the spell description) that says the target of minimus containment cannot still take actions, so I believe that they can (though they will still be trapped in the jar, which poses a host of other problems, such as not having line of effect to anything).
I intend to use the spell as a means of having a safe manner of carrying my true body around while using other spells, such as magic jar or possession.