Saving files form Leafpad acros PCManFM SMB share failed overiting with 0byte file

[User 2891]

If I load a SMB share manualy in PCManFM file manager on Lubuntu, open and edit it with leafpad, after save I found that file is empty.
If I save it par example on desktop and drag and drop in PCManFM file manager file saves ok (on SMB Share)

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: leafpad 0.8.18.1-4
ProcVersionSignature: Ubuntu 4.10.0-10.12~16.04.2+IntelAtom-linuxium 4.10.0
Uname: Linux 4.10.0-10-linuxium x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: LXDE
Date: Tue Mar 7 23:01:18 2017
InstallationDate: Installed on 2017-03-03 (4 days ago)
InstallationMedia: Lubuntu 16.04.2 LTS "Xenial Xerus" Linuxium - Release Intel Atom (20170215)
SourcePackage: leafpad
UpgradeStatus: No upgrade log present (probably fresh install)