I just noticed that I have this issue on existing projects.
When trying to change the sample rate from 44.1/24 to 48/24 Cubase crashes.
I can barely see the dialogue about conversion of the files sample rate, (convert button looks “pressed” already), and then Cubase crashes to desktop.
No issue on changing new projects from one sample rate to the other, everything is happening smoothly.
Most of my templates are created with older versions of Cubase, from 8 up to 9.5