** Branch linked: lp:~ubuntu-desktop/gnome-shell/ubuntu
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https://bugs.launchpad.net/bugs/1716921
Title:
Enable quick alt-tab to switch between last windows of the 2 recent
applications
Status in GNOME Shell:
Confirmed
Status in gnome-shell package in Ubuntu:
New
Bug description:
Alt-tab is generally showing up the switcher and give people the
ability to switch between applications, raising all windows of an
application if you don't enter into the window thumbnail subview to
select a particular window.
Alt + key above tab enables switching between the last 2 windows of
the current focused applications.
A case that happens to more advanced user is to switch between 2
windows of the last 2 applications. You can see a documentation
browser in the background for instance and a terminal overlapping it.
(the terminal has more than one window on this workspace).
The issue is that you are fine with the terminal on top of the
browser. However, if you alt-tab to the browser and alt-tab back (even
without the switcher displayed), you will end up with all windows from
your terminal raising, and so, covering your browser.
This is clearly for advanced users, and that's why I think we can
achieve a smarter/more advanced alt-tab behavior without breaking the
paradigm:
In case of a quick alt-tab (before the switcher UI shows up), we can
cover the power user use-case, which is to switch quickly between the
last focused window of the last 2 applications.
To sum that up in a simple case:
- you have an application with one instance, maximized
- you have another application with multiple instances, like multiple
terminals, not maximized.
If you press alt-tab, even quickly, the whole second application would be
raised (as no window has been selected). The consequence is that you have
all terminal in front of, for instance, your browser or documentation viewer
you are using.
The behavior we implement enables this. However, as soon as the switcher ui
is displayed to the user, not selecting a particular window instance will
raise the whole applications. Consequently only "quick alt-tab" flow is
impacted.
Here is a video of the current upstream behavior: https://youtu.be/D32VEP0sFk4
Here is a video of the proposal: https://youtu.be/k-IBk-Fibj4
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