When using "Clone in Sourcetree" from git repository in Bitbucket Server then following is saved in Remote Details:
Remote Account: Generic Account Generic Host
Legacy Account Settings:
  Host Type: Bitbucket Server
  Host Root Url: filled
  Username: filled

1. When closing and reopening Sourcetree all entries in Legacy Account Settings and remote icon in the toolbar contains a exclamation mark. Without this information "Checkout in Sourcetree" from an branch does not find the local repository.
2. After entering all the information again I try "Checkout in Sourcetree" again from an branch. The local repository is found now. But when I press the button "Checkout", Sourcetree crashes