Theres some tension between them. But yea nothing I would worry about yet. Jon has done nothing wrong and Dani might have overreacted in her punishment of some people but shes not the kill innocent people type of person.... yet. Honestly I think they are gonna build up that tension more and more and then one of them is gonna end up dying saving the other.
Dani doesn't have much leverage anymore does she? Looked like almost her entire army was wiped out. I know the 2nd sons are out there still and are probaly gonna make a big entrance in the fight against Cersie. But Dani gonna have less weight to throw around since right now all shes got is a dragon(Someone said the previews showed that Rhagal was still alive too so two dragons). Wouldnt be surprised if Sansa starts trying to throw more weight around now but honestly wish they would all get over it and just decide to figure it out after Cersie is gone.