The Who is Online widget shows a members + anonymous + guest count when in horizontal mode, but in vertical mode, guests are omitted. I checked the widget template and it seems that the $guest variable is simply not available when the widget is in the sidebar. 

Anyone knows a simple way to show the guest count in the sidebar or even globally?

It helps to show first-time visitors that the site is actually quite busy and therefore possibly worth joining. 

If you remove the IF/ENDIF, it will show. Find:

	{{if $orientation == 'horizontal'}}
		&nbsp;&nbsp;<span class='ipsType_light ipsType_unbold ipsType_medium'>{lang="block_whos_online_info_members" pluralize="$memberCount"}, {lang="block_whos_online_info_anonymous" pluralize="$anonymous"}, {lang="block_whos_online_info_guests" pluralize="$guests"}</span>
	{{endif}}

Change to:

	&nbsp;&nbsp;<span class='ipsType_light ipsType_unbold ipsType_medium'>{lang="block_whos_online_info_members" pluralize="$memberCount"}, {lang="block_whos_online_info_anonymous" pluralize="$anonymous"}, {lang="block_whos_online_info_guests" pluralize="$guests"}</span>

I tried that before but the guest count was always “0”. But maybe that’s a result of the sidebar caching. Will try again. Thanks! :-)

You're right. It is controlled on PHP widget file (applications\core\widgets\whosOnline.php):

		/* Get guests count */
		$memberCount = 0;
		$guests = 0;
		$anonymous = 0;
		if ( $this->orientation === 'horizontal' )
		{
			foreach ( \IPS\Db::i()->select( 'login_type, COUNT(*) AS count', 'core_sessions', array( 'running_time>' . \IPS\DateTime::create()->sub( new \DateInterval( 'PT30M' ) )->getTimeStamp() ), NULL, NULL, 'login_type' ) as $row )
			{
				switch ( $row['login_type'] )
				{
					case \IPS\Session\Front::LOGIN_TYPE_MEMBER:
						$memberCount += $row['count'];
						break;
					case \IPS\Session\Front::LOGIN_TYPE_ANONYMOUS:
						$anonymous += $row['count'];
						break;
					case \IPS\Session\Front::LOGIN_TYPE_GUEST:
						$guests += $row['count'];
						break;
				}
			}
		}
		else
		{
			$memberCount = count( $members );
		}

If you change it to:

        /* Get guests count */
        $memberCount = 0;
        $guests = 0;
        $anonymous = 0;
        /*if ( $this->orientation === 'horizontal' )
        {*/
            foreach ( \IPS\Db::i()->select( 'login_type, COUNT(*) AS count', 'core_sessions', array( 'running_time>' . \IPS\DateTime::create()->sub( new \DateInterval( 'PT30M' ) )->getTimeStamp() ), NULL, NULL, 'login_type' ) as $row )
            {
                switch ( $row['login_type'] )
                {
                    case \IPS\Session\Front::LOGIN_TYPE_MEMBER:
                        $memberCount += $row['count'];
                        break;
                    case \IPS\Session\Front::LOGIN_TYPE_ANONYMOUS:
                        $anonymous += $row['count'];
                        break;
                    case \IPS\Session\Front::LOGIN_TYPE_GUEST:
                        $guests += $row['count'];
                        break;
                }
            }
        /*}
        else
        {
            $memberCount = count( $members );
        }*/

guests will appear.

But I'm not sure why hide the counter even on a code level. Don't know the reason behind this.

Anyway, it was just a quick test. Test on your board and see if it works fine.

That did the trick. Thanks. 

If no one has reported this to our Bug Tracker, can one of you please do so?

This sounds like a bug.

Thank you.

This sounds like a bug.

No, I don't think so. It was deliberately removed from the "vertical" view.

The removal may be the bug.

Please report this so it can be addressed.

Thank you.