That behavior is pretty common with many terminals. Off the top of my head, I know the default macOS Terminal and Windows Terminal both behave like that where y

That behavior is pretty common with many terminals. Off the top of my head, I know the default macOS Terminal and Windows Terminal both behave like that where you need to change the default dimensions in the settings. I personally prefer having the dimensions set to a default size and then resizing specific windows that require more space. But it should at least be an option to have it remember resizes.