Default "Hide front touch buttons settings" does not work

When you enable an Accessibility Service on the G Flex like: Pebble, Tasker or any other notification service in the Accessibility settings, the Hide front touch toggle for removing the soft keys on selected apps no longer works and the toggle disappears. Once you turn all of your Accessibility Services back off, the toggle for showing and hiding front touch buttons appears and works again. Can anyone else duplicate this? I am on the T-Mobile version.
Thanks