Alt-Tab - Windows in the Alt-Tab spread are skipped when cycling Alt-Tab in reverse using the SHIFT key

[Galaxor]

Windows in the Alt-Tab spread are skipped when cycling Alt-Tab in reverse using the SHIFT key.

To Reproduce:

1. Open two Chromium Web Browser windows

2. open Gnome terminal

3. Use alt-tab to cycle through all the windows, pausing when the focus is over the Chromium icon to spread the two chromium windows. Notice how it is possible to select either one of the individual Chromium windows using the Alt-Tab spread.

4. Now keeping the ALT key held down, also hold down the SHIFT key.

5. Tap the TAB key (whilst keeping ALT and SHIFT held down) to perform the same exercise in reverse.

6. Notice how only one of the two Chromium windows can be selected in the Alt-Tab spread. Whilst cycling through Alt-Tab in reverse, it is impossible to select one of the Chromium windows.

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Desired Solution:

- Holding down the SHIFT key while in Alt-Tab should reverse all actions, and all app windows should be selectable.