It is typical to write or extend a sql stmt on the top of a query window and to see the result in the bottom.
dbForge has not that standard behaviour for this window. My Suggestion is to configure or save the last the window layout as it will be needed.
I know there are two buttons in the bottom to click on to change this layout but when you work the whole day with this tool and you have click 200 times a day these both buttons it's getting bothersome and not a good user experience.