By Sticky Keys I really meant all the bits thereabouts including Filter Keys, etc. and as just something to look at, because -
As Mr BR says the effects should be global but as Mr Schwartz says
"Isn't Windows fun?" 
- in my own case if I play around with the accessibility keyboard settings much I end up with a dead keyboard (it is on a USB hub on my monitor) which is worse than clicks
, so anything can happen.