I reproed this using Pathfinder data sets to provide an example.
When adding a Trait (such as Scholar of the Ancients) or selecting a racial ethnicity (Varisian in this case), a character automatically learns some languages. In these cases Thassilonian and Varisian.
However, upon returning to the summary tab, the languages section is not refreshed and those languages are not listed.
To make it worse, opening up "Add Bonus Language" or "Add Language via Skill Points" dialog will not show the relevant languages.
This problem gets resolved if the user either adds another language, OR they save and close and re-open their character.
Expect: The languages section of the summary tab would get refreshed appropriatly.
(I've noted other parts of the Summary tab do not always refresh when I'd expect them. Perhaps this could be solved generically with some kind of global "Refresh" menu item that would refresh all the views)