Unknown icon on notification bar

[joelm73]

For the past week or so there has been a solid white circle appearing in my notification bar. Whenever I drag the notification bar down it disappears, only to reappear when I let the screen go back up. Does anyone know how to get rid of this? I have a Nexus 6 phone with Android 6.0.1.

 

[anon(238680)]

Welcome to Android Central. Do you use the Kindle app by any chance? This has been reported when using that app.

 

[joelm73]

Welcome to Android Central. Do you use the Kindle app by any chance? This has been reported when using that app.

Thanks for your reply, but no, I do not have the Kindle app on my phone.