I can confirm this happens, but it might be a dependency issue. Uninstalling pdfsam from Debian repos and installing it - as .deb or the generic .tar.xz - from the official repo in the latest version works without issues. I accidentally opened a bug report on their Git as I didn't notice that the installation of their .deb failed without uninstalling the version from Debian repos first. It also contains the detailed log file created when pdfsam fails to start: https://github.com/torakiki/pdfsam/issues/675
