I thought this was a polyploid.. other user sounds more experienced and knowledgeable on the subject tho.. I’m certainly not an expert on that. Either way, I recently had the same thing on one of mine.. and I’ve had it before on other plants.
It’s interesting cuz sometimes it stays and expresses that way thru the whole grow and plant consistently, other times it will just stop and new nodes grow normally with two branches.
On the most recent one tho, it had the 3 shoots per node until around node 5 or so.. at which point the apical growth switched back to normal 2 shoots per node, but one of those 3 shoots at the 5th node began growing as the main trunk had been - 3 shoots per node. So it just shifted to a branch at some point. Unfortunately it ended up a male, so I didn’t get to see it flower.
Anyways I say all that to get to the point that it’s probably a random chance what will happen.
Depends also if the side growth is showing the mutation as well. Sometimes it only does it on the main trunk, but the shoots grow normal.. sometimes the main trunk is doing it AND the shoots/branches that are growing off the main trunk are growing mutated in the same fashion.
I’d wait maybe and see how the growth is on the side shoots before deciding. Good luck!