Above screenshot is taken when I starts a new Codespaces session with spring-petclinic repo. Notice that dashboard and workspace symbols are both empty.

When app is not running, dashboard shows beans/endoint mappings based on results from workspace/symbols requests. If it's empty, dashboard shows nothing.
When app is running, some users are complaining about they cannot switch between "show defined beans" and "show all beans", it always shows all beans. Root cause is also the same, a bean is recognized as "defined in workspace" iff it's also a workspace symbol. (it's reported that after restarting codespaces, it has chance to get back to normal)