After stumbling upon the same issue, I realized that this is not a bug,
but intended behavior.
The output of csvtool is always a valid csv-formatted record again. It
removes any obsolete double quotes, but it keeps all *necessary* double
quotes.
In your example, csvtool gives the following
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: ocaml-csv (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1714760
Title: