WTH why can't I see the examples when in UI mode for Services in the Developer tools

When using the Developer tools to call a service in UI mode I can’t see the available example values which would be helpful. Example values are shown when in YAML mode. See screenshots below.

UI mode, no idea of the format of duration :confused:

YAML mode, example values are shown in bottom right, but hard to figure out how to exactly format the data object :confused: