After installing Ubuntu 19.04, ALT+TAB no longer groups windows under the same application. Instead it cycles through all windows irrespective of which app it belongs to. In Ubuntu 18.10 it worked differently (and better in my opinion) such that ALT+TAB switched between apps, and ALT+| (key above TAB) switched between windows of the same app. How can I achieve this setup in 19.04?
NOTE: ALT+| still cycles through windows of the same app, but I cannot use ALT+TAB first to select the app from the shorter list of apps (compared to the list of windows), so then ALT+TAB loses much of its power if you have many windows open.
According to the release notes for Ubuntu 19.04, Alt+Tab behaves differently than before:
The image below illustrates what Alt+Tab does:
And Super+Tab switches between applications with each application's windows available below:
The following image shows the default "switch" options in Settings > Devices > Keyboard > Shortcuts > Navigation:
All keyboard shortcuts including Alt+Tab can be managed in the Settings / Keyboard Shortcuts menu.
I liked the style in Ubuntu 18.04 GNOME, where Alt+Tab switch Applications. In Ubuntu Super+Tab switches applications by default, but you can change this to your liking.
A shortlist, with the Ubuntu 20.04 LTS defaults. NB! Subject to change between versions.
And just in case,
Super is your Windows key / Mac key.
Alt-TAB is one, for the workspace apps, but Control-Alt-TAB switches between all app from all workspaces (dconf, marco settings)