I've found that if I turn off the title for breadcrumbs the links disappear.

My solution is to place this css code in the custom.css. which moves the social media module position out of the way.
#socialmedia {
left: 0px;
top: 0px;
}
This is because, for some reason, the social media module position is on top (in front of) of the first line of the breadcrumbs. z-index: 5000; doesn't seem to work.
With the title in place the breadcrumbs are below the social media position and the links function normally.

Is there a better way to do this? Seems kind of "brute force"...

thanks,

Keith