Fixed in develop with 1a8a7b9126505db8157533f57fcfddf10788cc85

There doesn't seem to be a good generic solution for breadcrumbs, instead we can make the breadcrumb behavior tunable by choosing one of the strategies:
1) How you did get here (the current strategy)

This strategy has been removed.

We need to fix the case where users search for a vertex, click navigate to, and then can't use the breadcrumbs to go back to that vertex.

The user can now either use the back button or click the parent breadcrumb. This will switch the layer and add the vertex from the layer "below" to focus.

2) How you could have gotten here (show all paths)
(We'll need to same fix as 1) )

This is the "SHORTEST_PATH_TO_ROOT" strategy and always calculates a path to root.

3) You're on your own (no breadcrumbs)

This is the new default strategy.

More details can be found in the PR: https://github.com/OpenNMS/opennms/pull/1078

There doesn't seem to be a good generic solution for breadcrumbs, instead we can make the breadcrumb behavior tunable by choosing one of the strategies:
1) How you did get here (the current strategy)
We need to fix the case where users search for a vertex, click navigate to, and then can't use the breadcrumbs to go back to that vertex.
2) How you could have gotten here (show all paths)
(We'll need to same fix as 1) )
3) You're on your own (no breadcrumbs)

Clicking the parent breadcrumb should select the layer, and add the child to focus (currently the default focus is always used).