Systematic request to save changes to the cartwall

Hello,
I am encountering a strange little change since I updated mairlist to version 6.3.22. It’s really a minor issue.
I use the same cartwall every morning. I never add cartridges to it and do not make any changes.
Now, every day when I close it, mairlist asks me if I want to save changes to the cartwall page.
I did not have this message on earlier versions in the same case.
Best Regards
Matthieu