AutoBackups: Open file backup, doesn't work

[CIRCLE73]

When I go to the Command Palette and choose AutoBackups: Open file backup it shows an alert box saying "Backups for this file not exists!" but if I go to the backup directory I can see multiple backups of the same file stored.

This are my configurations:

{
    // Don't make changes to this file directly as they can get wiped out when the
    // plugin is updated. Instead transfer what you need to the 'Settings - User' file.

    // The directory where we'll keep our backups. If empty, we'll try to put them in
    // D:/Sublime Text Backups
    "backup_dir": "/Users/OC/sublime_backups/",

    // If true, also save a backup copy any time a file is opened (if backup file not exists)
    "backup_on_open_file": false,

    // If true, backups saved per day, in separate folders, for example D:/Sublime Text Backups/2013-05-23/myfile.php
    "backup_per_day": true,

    // If set, backups saved per second. possible values: false, "folder" or "file"
    // false - disabled backup per second
    // "folder" - backup example D:/Sublime Text Backups/2013-05-23/095034/myfile.php
    // "file" - backup example D:/Sublime Text Backups/2013-05-23/myfile_095034.php
    // to use this feature, you must have enabled backup_per_day setting
    "backup_per_time": "folder",

    // Files larger than this many bytes won't be backed up.
    "max_backup_file_size_bytes": 262144, // = 256 KB

    // Files older than X days will be deleted. If 0 - auto delete disabled
    "delete_old_backups": 20, // days to delete

    // If true, backup file opened in same line as cursor in original file
    "open_in_same_line": true,

    // If true, show backup previews
    "show_previews": true
}

[CIRCLE73]

I've noticed that if I set "backup_per_time": "folder", to "backup_per_time": "file", it works correctly.

[aa6]

I have this settings (default with no changes) and backup on opening a file doesn't work.

{
    // Don't make changes to this file directly as they can get wiped out when the
    // plugin is updated. Instead transfer what you need to the 'Settings - User' file.

    // The directory where we'll keep our backups. If empty, we'll try to put them in
    // ~/sublime_backups
    "backup_dir": "~/sublime_backups",

    // If true, also save a backup copy any time a file is opened (if backup file not exists)
    "backup_on_open_file": true,

    // If true, backups saved per day, in separate folders, for example ~/sublime_backups/2013-05-23/myfile.php
    "backup_per_day": true,

    // If set, backups saved per second. possible values: false, "folder" or "file"
    // false - disabled backup per second
    // "folder" - backup example D:/Sublime Text Backups/2013-05-23/095034/myfile.php
    // "file" - backup example D:/Sublime Text Backups/2013-05-23/myfile_095034.php
    // to use this feature, you must have enabled backup_per_day setting
    "backup_per_time": "file",

    // Files larger than this many bytes won't be backed up.
    "max_backup_file_size_bytes": 262144, // = 256 KB

    // Files older than X days will be deleted. If 0 - auto delete disabled
    "delete_old_backups": 0, // days to delete

    // ignore files/folders which match regexes
    "ignore_regexes": [
        // VCS folders
        "/\\.svn/", "/\\.hg/", "/\\.git/", "/\\.bzr/"
        // binary extensions
        ,"\\.(jpg|JPG|jpeg|JPEG|pjpeg|PJPEG|gif|GIF|png|PNG|apng|APNG|bmp|BMP|mp3|MP3|mid|MID|wav|WAV|au|AU|mp4|MP4|3gp|3GP|avi|AVI|wmv|WMV|mpeg|MPEG|mpg|MPG|mkv|MKV|swf|SWF|flv|FLV|zip|ZIP|rar|RAR|tar|TAR|tgz|TGZ|gz|GZ|bz2?|BZ2?|pdf|PDF|docx?|DOCX?|xlsx?|XLSX?|pptx?|PPTX?|rtf|RTF|psd|PSD|cdr|CDR|fla|FLA|exe|EXE)$"
    ],

    // If true, backup file opened in same line as cursor in original file
    "open_in_same_line": true,

    // If true, show backup previews (only in ST3)
    "show_previews": true

}

[aa6]

It happens when ST3 is closed and I open ST3 by opening the file in a file manager.