Launching Roo Shell adds all aspect files to change sets

I am currently working on a Spring Roo application. Our Roo version is 1.2.0, our source control system is Git & Gerrit, and IDE is a packaged version of Eclipse (SpringSource Tool Suite 2.7.1).

whenever I open roo it updates all the files but when I see the difference in git, i do not show any changes but it shows the file as modified, My problem is that this action always "dirties" all of my project's autogenerated aspect files and adds them to my pending changes list. Why does Roo updates all the files whenever I open the roo shell.

I have searched for an IDE setting to suppress these changes, but have not found anything that seems relevant. Has anyone else had this happen and found a way to fix it?