Hi,

Think of a user not having the capability block/quickcourselist:use and therefore not being allowed to use the block. Anyway, this user is allowed to add the block, for example on his MyMoodle page. The block appears in editing mode, but it stays empty and disappeares when editing mode is turned off. This is somehow inconsistent. Please add something like

function applicable_formats() {
if (has_capability('block/quickcourselist:use', get_context_instance(CONTEXT_SYSTEM)))
return (array('all' => true));
else
return (array('all' => false));

to prevent users from adding the block when they are not allowed to use it.

Thanks in advance.
Alex