Update 2015/1/24: Added CSS for Schema.org BreadcrumbList format that Breadcrumb NavXT 5.3.0+ uses.
While Breadcrumb NavXT has a setting for specifying the maximum length of a breadcrumb title, this feature has shortcomings. Namely, it does not handle HTML elements gracefully. This has been looked into in the past and is not an easy thing to fix. Additionally, from a semantical point of view, the breadcrumb trail markup should never be truncated. Thus, it is recommended that you do not use the “Max Title Length” setting. In fact, this setting will be deprecated in Breadcrumb NavXT 5.2, and removed in 5.3.
CSS offers a better solution, which will not leave you with garbled and/or truncated HTML tags, should they exist in your tile. This guide will show a way of keeping your breadcrumbs to a reasonable length without using the “Max Title Length” setting.