Core dump when quiting on Linux (no crash)

[remisalmon]

Your system information

• System information from steam (Steam -> Help -> System Information) in a gist: https://gist.github.com/remisalmon/e553458840cfb7df3de6d88245c79efc
• Have you checked for system updates?: Yes
• Are you using the latest stable video driver available for your system? Yes
• Have you verified the game files?: Yes

Please describe your issue in as much detail as possible:

Describe what you expected should happen and what did happen. Please link any large pastes as a Github Gist.

Every time I quit the game, systemd-coredump writes a core dump in /var/lib/systemd/coredump/
The game does start and quit without apparent issues
Steam installed with Flatpak on Fedora 31 (linux 5.5.10)

Log from journalctl:

Mar 24 18:06:20 inspiron audit[30889]: ANOM_ABEND auid=1000 uid=1000 gid=1000 ses=3 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=30889 comm="underlords" exe="/home/remi/.local/share/Steam/steamapps/common/Underlords/game/bin/linuxsteamrt64/underlords" sig=11 res=1
Mar 24 18:06:20 inspiron systemd-coredump[31222]: Removed old coredump core.underlords.1000.1e71ca769c90441d89f29fa2cd073ff5.16028.1584840931000000000000.lz4.
Mar 24 18:06:24 inspiron systemd-coredump[31222]: Process 30889 (underlords) of user 1000 dumped core.

Steps for reproducing this issue:

1. Start and quit normally
2. systemd-coredump writes to /var/lib/systemd/coredump