Jira displays the wrong number of changed files in bitbucket commits

In the development section of a Jira issue you can view commits. When you click on the commits and look at the details of bitbucket commits the count of the number of files changed is not correct. It is correct in stash.

Example
https://jdog.jira-dev.com/browse/JDEV-27283
Commit 1cfb055 shows 6 files changed

https://bitbucket.org/atlassian/jira-importers-plugin/commits/1cfb0550ef025b157dad49a1947fab7f34f40696/
Bitbucket reports that actually 54 files have changed.