Well I found that the settings aren't accessible just now, as you've mentioned. I think I need to enable an app in the accessibility setting in android so needed to go back already.
So I put the original file back in place but tasker keeps its 3 little dots and get an error when going into android settings. Have tried rebooting a few times. Well power off and power back on.
Weird. It's like the xml file isn't being read on boot. Similiar to before. when I made changes to what you suggested, but I didn't see anything different. But then suddenly did after deleting the line, weird