This is either a serious bug, or the Facebook app has gone rogue. I've had "Background App Refresh" turned off—for all apps—since the very beginning. I simply have no need for any of my apps' features to be running and updated round-the-clock. Today, under Battery Usage, I saw the words "Background Activity" by the Facebook app. I've never seen this before under any app, as is to be expected, given the fact that I don't enable this feature.
Anyone experiencing a similar anomaly?
I've included the relevant screenshots.
(click to expand)
Anyone experiencing a similar anomaly?
I've included the relevant screenshots.

