I was thinking about is the current Panchen Lama's teachers are Dorje Shugden's practitioners? In some of the videos where Panchen Lama attended in big ceremony, the way H.H conduct the prayers, the ritual he did u indicate H.H is very well trained in Gelugpa's lineage.
The Chinese preserved the monastries and temples not only to tell the world that they are preserved the Buddhist culture, they are too respect of the Tibetan's culture. By renovate the monasteries, it is showing to the world that China government are supporting religion freedom in Tibet. If the China government do not support any of the religion, they will go all the way to make sure that the religion demolished from the land of China.
Thus, if Panchen Lama is practicing Dorje Shugden, it also meant that the China government are supporting Dorje Shugden's practices.