Children's author briefly upset dramatist (5)

I believe the answer is:

ibsen

I'm a little stuck... Click here to teach me more about this clue!

'dramatist' is the definition.
(Henrik Ibsen, 1828-1906)

I cannot understand how the rest of the clue works.

(Other definitions for ibsen that I've seen before include "Norwegian dramatist, d. 1906" , "not one for 'All work and no play ...'" , "'Ghosts' writer" , "Is Ben a playwright?" , "Norwegian dramatist and poet" .)

I've seen this clue in The Telegraph.

Want a hint initially instead of a full solution? Install my app