Drip Rail Paint Cracking after 10 years a Restoration?

[Rich72C10]

Been wondering about a drip rail issue and dreading what needs to be done. There must be 1 zillion posts on working on the drip rail but nothing about after a restoration/paint so many years after (using the previous owners information it was roughly 10 years ago).

So I assume I am looking at a body shop visit and having the drip rail cleaned out, the seam re-sealed, then the upper white part of the cab repainted to have this corrected?

Truck stays in the garage and it get wet more by being washed than driving in the rain. Do you think this was done incorrectly for the pain to be cracking, pealing and then the rust starting to bleed out? Just wondering.