This is most probably a css issue not a bug with the bp 1.1.3.
Are you using the widget with default buddypress theme or some other theme.
If you are using different theme, you will have to style the widget yourself(may be some copy paste can help from bp default theme’s css).
		
	 
	
	
	
 
		
			
	
	
		
		I am using BuddyPress Default 1.1.3 by BuddyPress.org.
But it was the same thing before I updated to BuddyPress 1.1.3. So I really don’t know where this bug is come from..
Richard
		
	 
	
	
	
 
		
			
	
	
		
		Can you point to the site/page where the widget is active. May be It can help in finding the issue.
		
	 
	
	
	
 
		
			
	
	
		
		The web site is http://www.iquali.com
login: michael
password: test
It’s in french so widget’s name is: “Actuellement sur le site..”
Thank you
		
	 
	
	
	
 
		
			
	
	
		
		Your blog is not accessible using the credentials, so no one will be able to check it until you provide a test account here or make the site public for few minutes.
That’s the problem.
		
	 
	
	
	
 
		
			
	
	
		
		I am really sorry about that.
I fixed it, the website it available with 
username: michael
password: michael
Thank you in advance
		
	 
	
	
	
 
		
			
	
	
		
		This line is missing from your screen.css
.widget_bp_core_widget_whos_online .item-avatar {
float: left;
margin-right: 10px;
}
The avatars are not floated left, which should be as per the default theme, if you want that layout.
There may be other css omissions too, so I will advise take a look at the css file.
		
	 
	
	
	
 
		
			
	
	
		
		I add this line in my /www/wp-content/themes/bp-sn-parent/_inc/css/screen.css 
But nothing happen. Same problem..
		
	 
	
	
	
 
		
			
	
	
		
		This should go to your bp-default/_inc/css/screen.css
		
	 
	
	
	
 
		
			
	
	
		
		I have it already in this file.
		
	 
	
	
	
 
		
			
	
	
		
		ok, my best advice in that case, please use firebug(with firefox) to check the dom element and see how you can apply float left to the div containing the avatars. It is “item-avatar”, In that way you can do it better.
		
	 
	
	
	
 
		
			
	
	
		
		Thank you.
I add float: left; to 	.widget ul.item-list li .item-avatar img, img.avatar {
In /www/wp-content/themes/bp-default/_inc/css
And now it’s okay. 
Thank you!