steps to reproduce:

1. ASSERT: make sure that you have a connection to a v3 OpenShift server in explorer
2. EXEC: in Explorer: pick "New"->"Application" from context menu when selecting a project in your connection
3. ASSERT: application wizard pops up, radio "Use a template from server" is preselected
4. EXEC: switch radio "Use a template from my local file system"

Result:
There's no visual indication that the tree with server templates is not clickable any more. The "problem" is only visual, the tree is not clickable but doesnt look disabled for me.