Native client has the same behavior, problem is likely not related to Steam Play. Closing issue.
For what it's worth, this title when running under Proton does not get past initial loading.
Hello @SeongGino, since the reporting user has chosen to close this issue report, feel free to open a new compatibility report.
Nothing extracted yet.
Compatibility Report
System Information
I confirm:
Symptoms
Networking doesn't work in-game, cannot connect to leaderboards, scores fail to sync upon finishing a stage.
Reproduction
Launch game, attempt to view leaderboards, and/or finish a stage. I can reproduce this on all Proton versions I have tested.
I am using the Windows build in Proton as opposed to the native build because the native build doesn't work correctly on my system.
steam-230270.log