No arrows on mouse-over

After updating to version 3.111.1, the navigation arrows are no longer displayed when the mouse cursor hovers over the slideshow. Even when ‘dot navigation on mouse hover’ is enabled, it does not work; it appears that the plugin is generally no longer responding to mouse cursor interaction.

This has worked perfectly so far, and I haven’t made any changes to the CSS recently. Arrows and navigation dots are displayed as before when the ‘show arrows’ or ‘show navigation’ setting is selected.