I created an installer in SLES15 SP1 with installbuilder-profesional 19.12.0 and when I run the installer in graphical mode (Gnome) after successful installation or uninstallation a segmentation will occur when dialog is closed. The error points to pthread_cond_wait().
SLES15 SP1 kernel : 4.12.14-197.15-default
GCC version : gcc-7-branch revision 270538