Steam browser protocol failing silently when run over ssh

I am trying to launch a steam game on my computer through an ssh connection (into a Win10 machine). When run locally, the following python call works.

subprocess.run("start steam://rungameid/[gameid]", shell=True)

However, whenever I run this over an ssh connection—either in an interactive interpreter or by invoking a script on the target machine—my steam client suddenly exits.

I haven't noticed anything in the steam logs except that Steam\logs\connection_log.txt contains logoff and a new session start each time. This is not the case when I run the command locally on my machine. Why is steam aware of the different sources of this command, and why is this causing the steam connection to drop? Can anyone suggest a workaround?

Thanks.

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