Why is pop up appears when screen is on, especially incoming messages from WhatsApp?

Previous OS version- Marshmallow allows user to have a choice to enable/disable "previews in pop-up". The pop up is way too annoying as it comes when the screen is on and there is no privacy!!!

Show Accepted Answer

Guest Quick Reply (No URL, BBcode or HTML)

Last post by halle26
2 hours ago
Last post by madison57
3 hours ago
Last post by weissnat.emmanuelle
55 minutes ago
Last post by nikolaus.odessa
14 minutes ago
Last post by sborer
3 hours ago
Last post by qcrist
21 minutes ago