This plugin has the same problem as the following URL: https://www.redmine.org/issues/37718 It seems to incorrectly convert "+" to "%20" instead of "%2B" when generating URLs for code review links. 
This plugin has the same problem as the following URL:
https://www.redmine.org/issues/37718
It seems to incorrectly convert "+" to "%20" instead of "%2B" when generating URLs for code review links.