"Show detailed descriptions on the Glossary page" option only works for the first item on Glossary page.

$show_detailed variable was not declared as static in the () function.

Fix: change the line 839 to this (also changed the order of variables to match the variable_get() code block below).

static $click_option, $link_related, $show_detailed, $show_edit, $show_search, $one_way, $tax_img_avail, $access_tax, $access_search;