From initial Googling it seems that it's an intentional issue in later Android OS versions, that blue light filters (Apps) cannot have any effect on the swipe down notification area. I was just wondering if there's any latest news or fixes on this?

For Android OS 8, non-rooted phone.

  • Are you referring to the blue light filter functionality in the OS or are you talking about an app providing the blue filter? – Robert May 30 '19 at 12:41
  • @Robert an App. Added to question – larry909 May 30 '19 at 12:50
  • AFAIR Android 9 includes a system option for reducing blue light. Therefore on Android 9 there is need to use an app for that anymore. – Robert May 30 '19 at 13:30
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    The following article explains the background and that this restriction is present since Android 8 and will not be changed: xda-developers.com/… – Robert May 30 '19 at 13:37
  • @Robert I have Android OS 8 – larry909 May 30 '19 at 13:59

Figured out a solution which can be ised with Moto devices that have Moto Actions. One of the features is Night Display, which is a built-in blue-light filter which covers the swipe-down notification area.

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