Do you have Discord, Slack, Signal, WhatsApp or any other Electron-based applications installed on your computer? Do any of them have the same issue? With the latest update, the size and position of the window should be persisted as long as it is visible on any of the monitors.
We have tested the app using different scaling and resolutions and can no longer reproduce this in any scenario. When you get the chance, please report the exact resolution of your monitor as well as what scaling Windows is set to!
Also, do you have any other monitors to try?
Kind Regards,
Malte