Tree view problem in CIS explorer

Hi everyone,

I encoutered a problem when I was using orCAD capture CIS.

First, I opened BenchAccess1660/Capacitor/Ceramic and placed a part on a schematic page, as shown in the 1st picture.

Then, I returned to the CIS Explorer. But, the tree view was folded automatically, as shown in the 2nd picture. This is very inconvenient. I hope the opened tree view can be kept.

Could you please help me?. Any answer is appreciated.