I upgraded to WordPress 3.8 and now I am getting strange behavior from the Link Manager widget.
I am using the Link Manager to show links of certain categories. I have 3 instances of the Link Manager widget, one shows links in category A, one shows links in category B, and one shows links in category C.
All of them are displaying fine EXCEPT, for example, if I add a new link to the Link Manager and assign a category, all 3 widgets display only the title of the one of the widgets. All three have the same title, but none show any links from their category. This pretty much means I can't add or modify anything related to displaying all of links!
I noticed that you are not responding to support questions very quickly. So, I am thinking I am going to have to look for a new plugin to display my links. But, if you read this and can respond, I would greatly appreciate it.