My level 40 pirate's HPs has gone from 2007 hps to 2412 since the update, he did go up one cannon level (the only thing not mastered).
Don't think a cannon level would normally raise health, at least not like that.. would it?
I'll take it anyhow!
Perhaps when a level is achieved its readjusting/calculating all the new hps adjustments etc and updating the pirate to where they 'should' be?
Zeppers Lvl 40
http://pirates.teamofx.us