Steps to reproduce the issue

Create an admin menu
Create a menu item and click on menu item type

Expected result

A list of menu item types

Actual result

0 strlen(): Argument #1 ($string) must be of type string, array given

System information (as much as possible)

0 strlen(): Argument #1 ($string) must be of type string, array given

Additional comments

If I comment out Line 412 to 420 in Menu Model it works,
/* $o->request = array_filter($request, 'strlen');
$options[] = new CMSObject($o);

			 // Do not repeat the default view link (index.php?option=com_abc).
			 if (count($o->request) == 1) {
				 $ro = null;
			 }*/

print_r for $request is: print_r for request is:

Array ( [option] => com_banners ) Array ( [option] => com_categories [extension] => com_banners ) Array ( [option] => com_banners [view] => clients ) Array ( [option] => com_banners [view] => tracks ) Array ( [option] => com_contact ) Array ( [option] => com_categories [extension] => com_contact ) Array ( [option] => com_easybookreloaded ) Array ( [option] => com_easybookreloaded [view] => gb ) Array ( [option] => com_easybookreloaded [view] => badwords ) Array ( [option] => com_newsfeeds ) Array ( [option] => com_categories [extension] => com_newsfeeds ) Array ( [option] => com_osmap [act] => [task] => [controller] => [view] => sitemaps [layout] => [sub] => ) Array ( [option] => com_plugins [filter] => Array ( [folder] => osmap ) ) Array ( [option] => com_weblinks ) Array ( [option] => com_categories [extension] => com_weblinks ) Array ( [option] => com_fields [view] => fields [context] => com_weblinks.weblink ) Array ( [option] => com_fields [view] => groups [context] => com_weblinks.weblink )

-- could not be reproduced by others.

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