Best Fix for a little sealant delamination Front Cap

I would remove all the loose sealant in that area and uncover the screws in the trim piece that covers the seam. Make sure they are tight and the wood underneath isn't rotten. You need a mechanical junction to keep that point from opening again. You may even want to add another screw of two to keep this area tight. Then reseal with Dicor self leveling caulk.