When I start CDK and OpenShift connection is established, I get this in the Error Log view:
org.jboss.tools.openshift.ui
SSLCertificatesPreference.isValid(String): Could not parse 'Čt, 20 Zář 2018 12:54:07' in format E, d MMM yyyy HH:mm:ss
An exception stack trace is not available.

As you can see, the date is localized. I think this started happening after I updated to macOS Sierra last night - I never noticed it before. If we can figure out where the parsing is happening, perhaps we can come up with a switch for using english date here.

Env:
devstudio-10.2.0.AM1-v20160920-0457-B6061-installer-standalone.jar
cdk 2.2.rc5