accessibility service being off automatically

Hi,

I am using OP3 from last 1 month. Some app required accessibility service to be on, I observed that accessibility service being off automatically. Like applock, voodoo, freecharge, 360 security. Because of this applocks fingerprint is not working

Also sleep(turn of display) sometimes not worked

Any other faces this issue??
What is the problem? Can someone help me to solve this.
Phone is not rooted.

Thanks in advanced

Accessibility options not sticking

Please can someone confirm this bug.

Accessibility Options when enabled don't stick once you close the window.

For example Tasker and lastpass.

accessibility services keep turning off

My phone is rooted and installed twrp.
I have problem, accessibility services keep turning off. I enabled greenify in accessibility but after couple minutes is turn to off.
Its happening whit all installed apk like dashlane, nova launcher, greenify.
What the f*ck turn my services off?