After Alt + Tab, Cubase doesn't accept space to play.

Hi Guys,

I just noticed that after cubase lose the focus and then you alt + tab (command + tab in my case) to go back to it, None of the main windows has the focus (the white border) and I cannot hit space to play. If I click on any window (Project window or mix window) it starts working again.
If i’m at another application and go back to cubase by clicking on one of it windows, it also plays as well. The only problem is when you go back to cubase using CMD + Tab instead of clicking.

Anyone else can confirm this bug ?
I’m on Mac Mojave 10.14.6


I cannot reproduce it here on macOS 10.15.5. The focus frame is at the same place/window/area, where did I left the application.