using twice "show destop" in alt tab brings windows again
I don't know, if it is default or not, because I used ccsm to configure unity, but I have a "Show desktop" icon in my alt-tab switcher.
When I am on Firefox and release alt-tab on LibreOffice, it brings me LibreOffice. OK
When I am on LibreOffice and release alt-tab on LibreOffice, I stay on LibreOffice. OK
When I relase alt-tab on "Show Desktop" while I am in Firefox or LibreOffice, it brings me the desktop. When I do it again when I am on the desktop, it brings me Firefox or LibreOffice again. This is not consistent, isn't it ?