Starting Opera 37, Opera software has incorporated and enabled Rate Opera dialog on all channels such as developer, beta and stable. Sometimes, rate opera dialog may accidentally pop up and asks user to submit feedback, then, you can rate, leave your comment and submit, or you can close that dialog. You can also disable rate opera dialog from appearing in future again, here is how that can be done.
Disabling Rate Opera dialog
- Visit opera://flags/?search=rate#rate-opera
- Select Disabled and restart Opera browser.
- Done.
READ: How to disable Heartbeat Feedback feature in Firefox 37?