Regarding your other questions:
1) The issues have not happened without locking so far. Everything works smoothly when I don't lock (so that's why my workaround is to not lock the screen when I'm only away for short, although it's against company policies...)
2) When docked in the docking station I can see the loading battery icon and "Fully charged"
3,4,5) I have to test this separately again, maybe on the weekend. So far I did not see the issues when the computer was undocked (and no external displays present).
For the points raised in #6, I will test this and answer back later.
Regarding your other questions:
1) The issues have not happened without locking so far. Everything works smoothly when I don't lock (so that's why my workaround is to not lock the screen when I'm only away for short, although it's against company policies...)
2) When docked in the docking station I can see the loading battery icon and "Fully charged"
3,4,5) I have to test this separately again, maybe on the weekend. So far I did not see the issues when the computer was undocked (and no external displays present).
For the points raised in #6, I will test this and answer back later.