steam_appid.txt is being ignored in Editor after upgrading to 2021.v3.45

[Desonn]

I recently upgraded to version 3.45 and noticed a change in how the App ID is handled within the Unity Editor.

The Issue: Before the update, I could test my Demo version by simply placing the Demo App ID in steam_appid.txt and steam manager script. Steam would correctly show that I was playing the Demo. Since upgrading to 3.45, the Editor seems to ignore the text file and forces the Full Game App ID, even though steam_appid.txt is explicitly set to the Demo ID.

My Setup:

Full Game ID: 3540000

Demo ID: 3827580

Content of steam_appid.txt and SteamManager.cs: 3827580

Current Behavior: When I hit Play in the Editor, the Steam Client shows I am playing App ID 3540000 (Full Game).

Expected Behavior: I expect it to respect the text file and initialize as App ID 3827580 (Demo), which is how it behaved prior to this update.

Question: Does version 3.45 intentionally override the steam_appid.txt file somewhere else where I am missing ? If so, what is the recommended workflow for toggling between the Full Game and Demo environments in the Editor without changing the main settings asset every time?

Thanks!