Dvorak layout with Qwerty hotkeys (Dvorak — Qwerty Ctrl)
Solution 1:
Please see this bug and the long and heated discussion around it: https://bugzilla.gnome.org/show_bug.cgi?id=162726
The behaviour you want was actually the default behaviour before and was considered a bug by people using the Dvorak layout...
PS: That it works in gnome-terminal is considered a bug...
Solution 2:
Reported on Launchpad as bug 794510. Reported on GNOME Bugzilla as bug 652104.
No option to use Qwerty hotkeys in alternative Latin keyboard layouts
Some users prefer to use an alternative Latin layout such as Dvorak to increase their typing speed. Many of these users prefer to use the original Qwerty keyboard shortcuts which are conveniently positioned (e.g. Ctrl: C-Copy, V-Paste, S-Save). An option should be provided to use Qwerty hotkeys with alternative layouts.
Qwerty hotkeys are already used in the terminal and in non-latin keyboard layouts. Qwerty hotkeys were used in all keyboard layouts before bug 162726 was fixed.
GNOME Bugzilla bug 162726 argues the converse; comment directing to new bug added.