Thanks for taking the time to report this issue.
Could you please update and try again with the latest versions of the
launcher and window-picker-applet installed? I could not reproduce this
issue on a fully updated system.
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After launching app that starts with a dialog, focus not on that
Interesting thing you say there: I don't use the window-picker-applet, I
just use Alt+Tab to switch between windows. When I add it to my panel,
it works as expected. But that should be a choice -- I have no need for
a window picker, it doesn't add any value for my keyboard-centric usage
pattern