Minor issue in novel with adventure story in collection (4,5)
I believe the answer is:
news sheet
'minor issue' is the definition.
(small newspaper)
'novel with adventure story in collection' is the wordplay.
'novel' becomes 'new' (similar in meaning).
'with' is a charade indicator (letters next to each other).
'adventure story' becomes 'She' (novel by H Rider Haggard).
'in' means one lot of letters goes inside another.
'collection' becomes 'set' (set is a kind of collection).
'she' placed within 'set' is 'ssheet'.
'new'+'ssheet'='NEWS-SHEET'
'in' is the link.
(Other definitions for news sheet that I've seen before include "Modest publication" , "bulletin" .)