My Worker doesn't behave quite the same as yours. Reboot doesn't help it.
I removed the config from my other machine.
Yes, the versions are different, I'm running 3.8.0 64bit (though I doubt that, that matters, for the config files at least).
Perhaps save worker state saves the size/position of it from when you close it, for next time? I don't know, I always run it full screen & auto load it via Openbox ~/.config/openbox/autostart file.
Worker opens each of its file lister windows in the directories that you are set via the
List view configuration ->
Initial directories sub-section, found in the left hand column of the config GUI.
No, I didn't import the config file using that available option (never do when I set up a new system, I just dump the whole directory ~/.worker over the top of Workers initial useless stuff. So I should try that, you never know your luck.