The most common and most likely answer to this crossword clue is the 13 letter word REPUBLICATION
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More clues leading to the result REPUBLICATION
Buddy explains!

The straight part
We know that "further issue" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case further issue = republication.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does REPUBLICATION mean?
REPUBLICATION noun- The act of publishing again.
- A reprint or republished edition of a book, a will, etc.