crash when loading saved game freedoom 1

[De Cuyper Marc]

In freedoom 1 I can save a game. When still in the game I can load a saved game, but when I quit and start freedoom again and try to load the previous saved game, the application quits immediately without warning.
In freedoom 2 there are no problems, no problems either with external wads loaded with prboom+.
I use xubuntu 18.04
Version freedoom is 0.11.3-1

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: freedoom 0.11.3-1
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: XFCE
Date: Tue May 15 02:23:35 2018
InstallationDate: Installed on 2018-05-09 (5 days ago)
InstallationMedia: Xubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
PackageArchitecture: all
SourcePackage: freedoom
UpgradeStatus: No upgrade log present (probably fresh install)