closing song causes program shutdown

Here is my setup.MacBook Pro
Model Identifier: MacBookPro15,1
Processor Name: Intel Core i7
Processor Speed: 2.6 GHz
Number of Processors: 1
Total Number of Cores: 6
L2 Cache (per Core): 256 KB
L3 Cache: 9 MB
Hyper-Threading Technology: Enabled
Mojave 10.14.16
cubase 10.0.30
yamaha driver V1.10.5
UR 824 drivers
remote and midi nectar panorama(great interface) most recent (29 KB)