I've noticed that using Super+Tab in 19.04 starts on the focused application which is not very efficient for quickly switching back and forth between applications.
The old functionality was that when you typed Super+Tab it would start on the last application you had focused, not the current. Anyone else seeing this?
Wayland was the problem. When I switched the login setting from "Gnome" to "Gnome on Xorg" the probem was fixed.
No, I am not seeing that behavior. When I super+tab the list starts with the current application but the most recent previous application is highlighted immediately. I'm using Ubuntu 19.04 without Wayland support. If you can give me some more info maybe we can troubleshoot why yours is different.