I have a Oracle4/Sorcerer4 character with the magic knack (sorcerer) trait.
The +2 to caster level of the sorcerer do not show on the spells.
I attached my pcgen character sheet to show the problem.
The problem is isolated in the JEP formula. If the bonus is merely a +2, it applies, if the bonus is calculating both the Class Level and Bonus Level of the specific class, the formula returns a 0, however, the formula evaluates properly when placed in the expression calculator. This appears to be a race condition or order of operations issue, where something isn't finished before the rest is presented, giving us the incorrect answer "0".
Code team, not sure if this rank high, since we will have an answer when the new formula system is implemented. I can do a workaround in data see if it works.
Temp Patch fix for issue
(Replace the existing file with this one - data/pathfinder/paizo/roleplaying_game/advanced_players_guide/)