Fasciation on rose canes

General
1

Last summer my Olivia Rose Austin put up some strong new growth and then it got weird. The new canes were ‘bloated’, the leaves never matured, and developed a witches broom at the top. Before you think RRD, let me finish.
I’ve had this bush ~3 years, it’s not new. The one next to it, and all my others, did nothing like this.
The ONLY thing new was that in this area, behind where she was planted, we installed a mini-split HVAC system and the outdoor unit was placed there. All summer long whenever that a/c unit kicked on it would blow air. One would think that to not be a problem, right?
I can’t fathom what went wrong. I opted to dig the plant out yesterday when I was pruning. To the best of my knowledge we do not have RRD here (yet).

My question is… what went wrong?

2

Did you take any pictures of the distorted canes? We can’t offer any advice without seeing what was happening. How are your adjacent roses doing? Where do you live?

3

I did, I also sent the pics to a MR in my area. He didn’t think it was, but could not confirm.
I wanted to upload pics but I could not get my computer to cooperate. It gives me an error code…