SteamApi problem with Trackmania (2020) (Epic Games ver.)

Hi, while I could launch Trackamania for a first time and play it well using proton and some light tweaking (notably WINEDLLOVERRIDES="dinput8=n,b" and using steam runtime as otherwise, uplay doesn't find epic games services (don't ask me how or why)), any subsequent launch attempts didn't work, with logs ending on a steam api error, no matter wether I disabled steam runtime in the game options or not.
Any idea why ?

Thanks in advance !
Was this page helpful?