[Bug:] Broken files-plugin with backends Owncloud & SMB in package-build 'files-2.1.0.130' (or earlier)

Hello folks,
updating to current files-plugin-package 2.1.0.130 leads to several issues and entirely breaks Webapp’s Owncloud and SMB-connectivity on CentOS 6.9

1) Error 500 on webapp load, configured files-accounts not visible in settings, no access to files possible.
Reason incomplete definition of abstract class :

"NOTICE: PHP message: PHP Fatal error:  Class Files\Backend\Owncloud\Backend contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (Files\Backend\iFeatureSharing::shareeDetails) in /usr/share/kopano-webapp/plugins/filesbackendOwncloud/php/class.backend.php on line 1264"

If we add the missing implementation of shareeDetails
with empty body infilesbackendOwncloud/php/class.backend.php,

        public function shareeDetails()
        {
        }

the above problems disappear and backend owncloud seems to work again:

2) smb-access with fallback “wrapping smbclient” breaks on browsing directory:
Possible reason: Memoryleak:

"NOTICE: PHP message: [BACKEND_SMB]: Share path set to /"
"NOTICE: PHP message: [BACKEND_SMB]: libsmbclient-php not available, falling back to wrapping smbclient"
"NOTICE: PHP message: [BACKEND_SMB]: SMB Share openened successfully!"
"NOTICE: PHP message: [BACKEND_SMB]: [LS] start for dir: /"
"NOTICE: PHP message: PHP Fatal error:  Allowed memory size of 1073741824 bytes exhausted (tried to allocate 72 bytes) in /usr/share/kopano-webapp/plugins/filesbackendSMB/php/lib/SMB/src/Connection.php on line 43"

3) smb-access with libsmbclient.so fails if account is configured with root “/” as share-path:
Reason: Invalid UNC-path-construction:

"NOTICE: PHP message: [BACKEND_SMB]: Share path set to //"
"NOTICE: PHP message: [BACKEND_SMB]: Opening a nativ smb connection via libsmbclient-php"
"NOTICE: PHP message: [BACKEND_SMB]: SMB Share openened successfully!"
"NOTICE: PHP message: [BACKEND_SMB]: [LS] start for dir: /"
"NOTICE: PHP message: [BACKEND_SMB]: LS failed: Icewind\SMB\Exception\Exception Object"
"("
"    [message:protected] => Unknown error (8216) for smb://localhost////"
"    [string:Exception:private] => "
"    [code:protected] => 8216"
"    [file:protected] => /usr/share/kopano-webapp/plugins/filesbackendSMB/php/lib/SMB/src/NativeState.php"
"    [line:protected] => 66"
"    [trace:Exception:private] => Array"
"        ("
"            [0] => Array"
"                ("
"                    [file] => /usr/share/kopano-webapp/plugins/filesbackendSMB/php/lib/SMB/src/NativeState.php"
"                    [line] => 72"
"                    [function] => handleError"
"                    [class] => Icewind\SMB\NativeState"
"                    [type] => ->"
"                    [args] => Array"
"                        ("
"                            [0] => smb://localhost////"
"                        )"
""
"                )"
""
"            [1] => Array"
"                ("
"                    [file] => /usr/share/kopano-webapp/plugins/filesbackendSMB/php/lib/S..."
"NOTICE: PHP message: [ERROR][AccountStore] Account check failed: Unknown error (8216) for smb://localhost////"

4) End of report ;-)

Best regards,
++ umgfoin.

Commit 806a95d673e will would fix all above issues,
but it is missing in package-build files-2.1.0.130.

++umgfoin.