Red border flashes without strict mode active

[as.hs]

Every now and then I see around the edge of my phone a red border flashes, I looked it up and it said it had something to do with strict mode in developer settings. I went in and strict mode was not checked, I tried Turing it on and leaving it on for a minute or so and turned it back off, it is still doing it. Any suggestions? Model: xt1644 Android version: 6.0.1 ROM: Dirty Unicorns DU version: Dirty-deeds-v10.6

 

[rajatgupta1998]

Hmm, you have probably flashed an -eng build on your device. Use a -userdebug build.