Ubuntu 18.04 with i3 4.15
Note: works with Ubuntu default gnome desktop :-( and is a regression to 16.04.
bash> gsettings get org.gnome.desktop.interface gtk-key-theme 'Emacs'
and Keyboard & Mouse in
gnome-tweaks says "ON" for Emacs input
but no luck with C-a - C-e and friends.
This is extremely annoying especially in chrome :-(