The language becomes the default system language without any other effects.
The application launch bar partially overlaps the menu icon in lxpanel.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: lxpanel 0.8.1-1ubuntu2
ProcVersionSignature: Ubuntu 4.3.0-7.18-generic 4.3.3
Uname: Linux 4.3.0-7-generic x86_64
ApportVersion: 2.19.3-0ubuntu3
Architecture: amd64
Config_Home_Lubuntu:
[Command]
Logout=lxsession-default quit
CurrentDesktop: LXDE
Date: Sat Jan 23 10:30:15 2016
InstallationDate: Installed on 2016-01-08 (14 days ago)
InstallationMedia: Lubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160102)
SourcePackage: lxpanel
UpgradeStatus: No upgrade log present (probably fresh install)
Bug also reported on Launchpad 'Lubuntu Packages Team' https://bugs.launchpad.net/lxde/+bug/1537334
Looks like this is fixed in lxpanel 0.9.0 (ref: https://sourceforge.net/p/lxde/bugs/798/ ), while you are using lxpanel 0.8.1. It would be better that you ask the vendor side maintainer to upgrade lxpanel.