I believe it happens because of the “exceeded the quota” error with Browser LocalStorage, as you have shown here Deploying production to Dev enviornment - #10 by Baljeet_Singh
That’s why @Dima asked you to check your browser’s DevConsole to see any errors there Changes are getting undone automatically - #4 by Dima_Vak
The issue has been fixed and it is in the testing stage, we are planning to release it next week, while it’s not I can recommend you to clean up your local storage manually