This happened to me a couple of times and it's pretty annoying, but I'm not sure if anything can be done about it.
When you launch cdk in devstudio and then forget about it and do something else, then when you get back to devstudio to actually play with cdk, you will see it fail horribly.
This is because the startup time out has been reached and since you haven't accepted the openshift certificate, the prompt will be waiting for you and will cause time out.