Long practice lists open on their starred problems

A long set used to show a few rows and a Show more button that could not be closed again. Now a list of 24 problems or fewer shows whole, and a longer one opens on its starred problems.

The All problems switch in the toolbar shows every row in the same order, marks the starred ones with a small amber star, and turns off again. The count beside it reads, for example, 22 starred of 129. Badges, solved counts and the progress bar still count the whole set.

Practice pages also line up as one centred column at every width, from phones to wide monitors and zoomed-out windows.