On my touch screen if I tap the ‘Show Applications’ icon at the bottom of my dock the icons flash up for a split second and then disappear as if clicked numerous times. I was also getting the virtual keyboard appearing but I have managed to disable that using a block caribou extension.

It would appear it’s the same issue as here: https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extension-ubuntu-dock/+bug/1725384

I assume this is a dash to dock issue rather than antergos…?