This release of the Change Request extension contains a big improvement in the way comments are added when viewing a Change Request difference, in order to always keep a contextual difference displayed at the top of a comment, even if the differences change over time.
As part of this work, some bugs related to the interaction with comments have also been fixed. This release also contains other bug fixes and improvements. The full list of changes is available in the 1.5 release notes.
Note that the next version of the Change Request extension will require XWiki 14.10.7 or greater to work properly (in order to fix a remaining important bug related to conflict fixing).