Disable Tooltips in 18.04 MATE

I used dconf-editor to disable all tooltips but it does not have any effect, does anyone know what I am missing?

Which tooltips do you want to disable? And where in dconf-editor (what path, key/value)?

I searched for tooltips and there are six, five of which I turned off the sixth is off by default.
The first is org/onboard/show-tooltips (they are all ON/OFF)

I want to turn all of them off, but really why is it not designed so when I right click mouse then it shows the tooltip otherwise not. Now it works the other way around.