Hey, quick question.

Do bolstering magic and bless stack? I can't find quick documentation on this. Google has failed me in the time I have.

I don't know what specific "bolstering magic" you are referring to, but generally, yes, two similar effects can and will stack as long as they are not the exact same thing. So, Bless will add 1d4 to your attack/saving roll, and then some other spell or effect could add another d4 or other dice or constant value to the same roll. Under no circumstances, however, will two Bless spells grant you more than the one d4. 

Quote from RegentCorreon >>

I don't know what specific "bolstering magic" you are referring to, but generally, yes, two similar effects can and will stack as long as they are not the exact same thing. So, Bless will add 1d4 to your attack/saving roll, and then some other spell or effect could add another d4 or other dice or constant value to the same roll. Under no circumstances, however, will two Bless spells grant you more than the one d4. 

 they are most likely refering the path of wild magic feature

Yes, Bolstering Magic and Bless stack.