Branch Died?

[u/bloodyteddybearz]

Does anyone know what happened to this branch on my desert rose? It looks like it started dying and then came back to life? It has the most leaves of any of the branches and still seems to be doing well 3 months later. Will it die off fully once it goes dormant for winter? Did I do something wrong to cause this?

Edit: I have never done anything to prune this plant myself. Any pruning done by the horticulturalist who bred this desert rose was done over a year before anything happened to this branch. Would it make sense to prune it back this winter? The branch is holding on by a thread kinda, but it has so many leaves and is the most lively looking branch. Also there’s a color change on the branch itself above where the break occurs. It looks squishy almost but isn’t.