>>can anybody tell me what is going on?
Not from the information you provided. It doesn't (and has never) happened to me, so there must be something about your setup that is causing it (your account, your browser, antivirus suite, etc..)
On a phone or tablet? Using the app? Desktop computer or laptop? What browser and OS? Running antivirus? Did it just start happening? Did you change anything recently that might have triggered it (browser update, OS update, AV update, new browser, whatever)
Have you tried an alternate browser? Cleared cache and cookies?
