Random white dot, responsive view!

What browser/os are you using?

Chrome!

mp6/components/responsive/css/admin-bar.css
line 90-118

#wpadminbar #wp-admin-bar-my-sites > .ab-item,
#wpadminbar #wp-admin-bar-site-name > .ab-item {
	text-indent: -9999px;
	overflow: hidden;
	width: 52px;
	padding: 0;
	color: #999;
	font: normal 30px/1 'dashicons';
	position: relative;
	speak: none;
	-webkit-font-smoothing: antialiased;
}
#wpadminbar #wp-admin-bar-site-name > .ab-item:before {
	display: block;
	text-indent: 0;
	content: '\f102';
	padding-top: 7px;
	padding-left: 11px;
}
#wpadminbar #wp-admin-bar-my-sites > .ab-item:before {
	display: block;
	text-indent: 0;
	content: '\f112';
	font-size: 28px;
	padding-top: 10px;
	padding-left: 12px;
}

to

#wpadminbar #wp-admin-bar-my-sites > .ab-item,
#wpadminbar #wp-admin-bar-site-name > .ab-item {
	text-indent: -9999px;
	overflow: hidden;
	width: 52px;
	padding: 0;
	color: #999;
	position: relative;
	speak: none;
	-webkit-font-smoothing: antialiased;
}
#wpadminbar #wp-admin-bar-site-name > .ab-item:before,
#wpadminbar #wp-admin-bar-my-sites > .ab-item:before {
	font: normal 30px/1 'dashicons';
}
#wpadminbar #wp-admin-bar-site-name > .ab-item:before {
	display: block;
	text-indent: 0;
	content: '\f102';
	padding-top: 7px;
	padding-left: 11px;
}
#wpadminbar #wp-admin-bar-my-sites > .ab-item:before {
	display: block;
	text-indent: 0;
	content: '\f112';
	font-size: 28px;
	padding-top: 10px;
	padding-left: 12px;
}

Thanks! I just fixed this in 751351.