I became this rose this year in spring from a friend, that got it as a wrong delivery from a nursery.
I wouldn't have chosen it, but wanted to give it a chance.
It came with lots of purplish-blue irregular spots on the (cut) canes of the bare-root plant.
New canes emerged during the season and all the spotted canes died/did not grow.
Now in Fall, the new canes are affected too with those purplish-blue irregular spots. Similar to canes that are infected by Pseudoperonospora sparsa, or downy mildew. (I strongly believe it is downy mildew)
It will be thrown away.