Tree of Savior Forum

Field boss no exp?

So, I was playing with a party and we ended up facing a field boss on demon’s prison. There was only 6 players there (me, 4 from my party and one random archer).
It took us about 40~46 min to kill it and when we were almost done, I decided to check the exp to see how much we would get (never heard and never noticed anything about field bosses exp before).
But for my surprise…nothing…at all. Like, 0.0000%.
We all got the box rewards and most of us got the boss’s card if I’m not mistaken.
But I wanted to know is: Is that for real??
Is that an intended feature to have field bosses not giving exp in a game where there will be like 500+ levels??