Vst instruments tree always expanded when i open cubase

Every time i open cubase and press F11 to add an instruments or choose from the Rack, the VSTi tree is expanded and i have to click the (- )to collapse the tree
i test it with cubase 10.5.20 and cubase 11, same problem.

iam on OS Mojave

Hi,

This is known and already reported issue. Thank you.