Whenever you are opening at Task or RITM it will show you a pop up message saying
Note:-This message can vary according to the browser.
The system property glide.ui.dirty_form_support is creating this pop up message.
1.Go to System property
2.Serach for glide.ui.dirty_form_support.
3.Change the value to false.
It will stop showing you the pop up messgae.
These are some additional documents that will give you better knowledge on this:
Also I have attached a screenshot of the issue.