The issue you're experiencing with the Graph Editor moving back to the first key when changing the "Interface Scale" setting is likely related to the auto frame feature. When the interface scale is adjusted, it might be triggering the auto frame functionality, which attempts to fit the graph view to the keys. You can try disabling the auto frame feature by clicking the "Auto" button in the Graph view to see if this resolves the issue. If the problem persists, it might be a bug specific to the beta version you are using, and it could be helpful to report it for further investigation.
