I recently updated my plugins and I think one of them caused the emails to no longer display "No changes" then there are no new SCM changes in the build.

In my case I am using Git.

Here is our usual output config:
${CHANGES_SINCE_LAST_BUILD, showDependencies=true, format="\n[%r]\n\t%m\t\t%a - %d\n%p"}

I tired using no attributes and it still did the same thing.

I also tried using/changing the default attribute and it still did not show anything.

It still properly displays the SCM changes when there are some to show.