This 4th movie was a total disappointment. Everything felt so rushed and disconnected from the previous movies. Actually it felt like a sideline episode from one of the streaming series.
Every aspect of the character development of Po along the first 3 movies made Kunfu Panda my favorite animated movies of all time. This included his unique relationship with the furious 5. Additionally, even if for a few seconds, little trinkets of Oogway's wisdom made such a huge impact.
Furthermore, while I don't think Po is even nearly ready to pass the mantle of the Dragon warrior on to another, I find it fitting that it would eventually go to one of the furious 5. Though they may not have been ready at the time of Po's choosing they have been in continuous training and development over all this time.
I would not recommend to anyone that this be considered a follow-up of the Kunfu Panda movies sequel but a filler episode