javispedro: I realise that the word "broken" is very subjective, which is why I went back and "quoted" it. I also realise that the WM is technically correct.

Perhaps if I phrased it this way for you:

It would be wonderful to have a "workaround wrapper" that would fix "sloppy" apps that have bugs that are exposed by the Matchbox2 WM.

If there was a command-line app that, when fed a window ID (probably obtained by wmctrl), would set that window to properly receive keyboard input focus (by setting whatever hints need to be set), I would be eternally grateful.

Can any C programmer make such a utility? Please? Please?