Post titles don't display for visitors when using Membership plugin

We initially set up the Membership plugin to show post titles to visitors from protected content:

[blog number_posts="3" cat_slug="patterns" title="yes" thumbnail="yes" excerpt="yes" excerpt_words="0" meta_all="yes" meta_author="no" meta_categories="no" meta_comments="no" meta_date="yes" meta_link="yes" scrolling="pagination" paging="no" strip_html="yes" blog_grid_columns="3" layout="grid"][/blog]

However, since a recent plug-in update, the post titles no longer display. I've checked the Membership configuration screens but nothing seems to have changed. So I'm at a loss on what's happened and unsure how to change the configuration to restore the display of these post titles.

Thank you for your support.