Comment 34 for bug 1035668

This "fix" in Unity 5.14 may have been the source of the regression. N.B. that the "fix" didn't correct the relevant bug anyway.
https://bugs.launchpad.net/unity/+bug/987156

Also, as also noted in the duplicate to the current bug (at https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1035712 ), the switcher preview often flicks around. Call the top window A, and the second window B. Then, sometimes the switcher shows A selected at the top, sometimes it shows B selected at the top, and sometimes it shows B, then quickly swaps the position of A and B. Regardless of what the switcher shows, A is always selected after a single alt-`. If the second option is shown (i.e. B at the top), I can repress ` to swap selection to the next window, and this also swaps the position of A and B, as per the third option.

Also, prior to this regression, the alt-` stack was somewhat broken anyway, with a double alt-` selecting the original window. This is outlined here: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1020027