Impossible to Cancel Out Of Network Access Dialog

[robinetmiller]

COSMIC Files can get into a permanent infinite dialog-loop when accessing a remote network location using an SSL private key with passphrase.

Reproduction

Set up:

1. Have an SSL public/private key set up for remote SSH/SFTP login that uses a passphrase.
   1. Ensure that you have not yet unlocked the private key in the keyring this session.
2. Have a directory on the remote machine set up as a bookmarked location (via Add to Sidebar menu item) from a prior access

(It may also occur with a fresh login; my use case is as above)

Actions:

1. Open COSMIC Files
2. Click on the saved remote directory bookmark in the sidebar. You should get the Access Prompt dialog asking for the private key passphrase
3. Click cancel to dismiss the Access Prompt dialog.
4. Behold a dialog within the Files window ("Unable to access network drive")
5. Witness also that the Access Dialog hath returned.
6. Click cancel on either dialog
7. Behold that the dialog returns promptly to thine screen, as if 'twere a 1995 virus.
8. Wail unto the skies, for lo, the only exit is to enter the password or destroy the Files process

Additional Notes
Clicking other directories in Files is apparently allowed (non-modal), but does not change either dialog's behaviour.

I have not tested this with a password login access instead of SSH+passphrase key. While I suspect that code pathway is different, it's probably worth checking for the same behaviour.