PM+ on Win 10.
This is just an annoyance but I think it is significant enough to be called a bug.
If you select a bunch photos on the contact sheet and then use ctrl-k to bring up the keywords panel, apply your keywords (or whatever) and then close the keywords panel, the contact sheet has now lost focus. If you are not careful you can lose your selection in getting the focus back to the contact sheet. Ideally the focus would return to the contact sheet when the keywords panel is closed.
