Sorry if this was known already, but I didn't see this one listed in the bugs/known issues thread - maybe most people already had researched trading before getting this so it wasn't noticed so far...?
While playing terran on a large map choosing the trading bonus as my first pragmatic one (got 2 beneficial before) I noticed:
Pragmatic Ideology "Traders (lvl 1)" grants a freighter but it does not grant the corresponding trade licence - so the freighter had to idle near its destination until my research had kept up...