My phone is a 1st Gen Moto G LTE (XT1039), running fully updated stock Android 5.1 and is NOT rooted.
I need to grant accessibility permission to an app, and when I drill down Settings > Accessibility > select a Service > swipe to ON > I get a pop-up screen which asks me to confirm granting permission with options to CANCEL or OK.
The "OK" option isn't greyed-out, but I can't select it. Nothing happens when I repeatedly hit the OK option. CANCEL works fine.
I've done some Googling which suggests that screen dimming apps can stop the OK button from working. I've therefore uninstalled Lux, Twilight, Nightowl and any other screen-affecting apps, but I've still got this problem.
Short of resetting my phone, does anyone know a solution to this?