Have you packaged your game for Linux only? If not, would you be able to upload the file somewhere so I could have a look at it? (like Google Drive) If so, there may be some problem since Linux is not a full operating system and the way it works it a lot different too other OS (that I know of).
Maybe try re-packaging your game or restarting your PC.
OR
It could also be because of how you’re using a beta version (4.23).
Regards,
D20