PCManFM does not obey thumbnails size limit

[Moshe Caspi]

"Show thumbnails" is enabled in the settings with a size limit of 2MB but thumbnails are generated for all PDF files sizes.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: pcmanfm 1.2.4-1ubuntu0.1
ProcVersionSignature: Ubuntu 4.4.0-137.163-generic 4.4.144
Uname: Linux 4.4.0-137-generic i686
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: i386
Config_pcmanfm_System_Lubuntu: Error: [Errno 2] No such file or directory: '/etc/xdg/pcmanfm/Lubuntu/lubuntu.conf'
CurrentDesktop: LXDE
Date: Wed Oct 3 13:02:31 2018
InstallationDate: Installed on 2015-01-06 (1365 days ago)
InstallationMedia: Lubuntu 14.10 "Utopic Unicorn" - Release i386 (20141022.1)
SourcePackage: pcmanfm
Udisks_dump: Error: [Errno 2] No such file or directory: 'udisks'
UpgradeStatus: Upgraded to xenial on 2018-08-28 (35 days ago)