EDIT: this is about advanced roadmaps op CLOUD not server.
I added a dependency in advanced roadmaps. MOBL-12 must be completed before MOBL-20.

When clicking the dependency I can see a warning 'Dates overlap (28days) which seems correct:
- End date of MOBL-12: 17JAN
- Start date of MOBL-20: 20 DEC
On the dependencies view I see the same information:

Why is this planning issue not viible on the actual plan? Other warnings have a yellow warning exclamation mark on the left next to the issue key. e.g. when child items fall out of their parent item.