Steps to reproduce:
1. (precondition) have an authenticated Bitbucket account and working SSH keys for this account.
2. open a new tab (clicking the "+" button on tab bar.
3. select "Remote" to see remote repos.
4. select one and click the "Clone" button, this brings up the clone page and starts the "checking repository type" stage.

If you don't do anything, the "Clone" button will stay disabled even though it's ready to clone. Simply clicking anywhere will make it enable, though it is confusing at first.