Tabs - workflow degradation 8.5.15 -> 8.5.20

In Cubase 8.5.15, when I clicked a second time on the Inserts and Sends Tabs on the Channel Settings or on the Control Room or Meter Tabs on the Control Room Mixer the Tabs Changed to their corresponding Subtabs (Inserts to Routing etc.)
Not working in 8.5.20 anymore.