It happens in all projects there are no particular steps. Most of the time the tracks just don't close when you click on (x) to close the track. Nothing happens.
Thank you for your feedback. Please describe the issue in a detailed step-by-step operation for us to reproduce, and provide the project file to help us identify the problem. Please provide your ".ctProject" file to help us identify the problem. You can use cloud services such as Google Drive, Dropbox or OneDrive to make the files available to us and add the link in your next comment. you can use private comment if you want to keep it private. Please capture a screen video about this issue, put it on the YouTube, and add the link in your next comment. Your help is highly appreciated. Reallusion