Hi Tudor,
I filled a ticket for the label problem: http://code.google.com/p/moose-technology/issues/detail?id=651
Also, I'm attaching the easiest browser I could create to show the update is not updating dynamic actions. 

Now, I'm trying to catch another problem I found: looks like at some conditions, with a tree presentation updating a list presentation, the list update is called a lot of times, and I don't know why (I'm catching this, I'll let you know in detail as soon as I have concrete information).