Project and mix lose focus after enabling an instrument track

Start with an empty project.

Create an instrument track.

Disable track.

Renable track.

Neither project or mix window are now in focus, meaning an extra mouse click in order to continue working.

Cubase 9.5.41. Windows 7 x64.

Dual monitor with project window on one and mix on the other.

https://vimeo.com/user8262689/review/300284212/21464031ff