I check both the Show Answers and Show Solutions boxes, click on either Submit or Check, see answer scoring, but
a) no solution is shown
b) the Show Solutions box has become unchecked
A possibly related change now has the site/webwork2 display of courses shown in a different style (e.g., the MAA banner now has a white background) and the course listing is on the left rather than centered.
I have not made a recent change to global.conf but have done "sudo svn update" in webwork2, pg, and NPL today.