By increasing the "scale of a drawing", it looks that's the scale of a layer you're increasing, not the whole image.
Which tool are you using to scale up your "drawing"?
What you can do is after increasing your drawing, go to the menu Image ➤ Fit Canvas to Layer, this will resize the canvas at the size of the layer you've just scaled up, allowing you to see/work on the full layer you've just scaled up
Or when you scale your drawing (I don't know which tool you're using) check in the tool option that "Image" is selected (see screenshot below), this scales the whole image with all layers (on a side note, the text will be rasterized (but still editable)).
Which tool are you using to scale up your "drawing"?
What you can do is after increasing your drawing, go to the menu Image ➤ Fit Canvas to Layer, this will resize the canvas at the size of the layer you've just scaled up, allowing you to see/work on the full layer you've just scaled up
Or when you scale your drawing (I don't know which tool you're using) check in the tool option that "Image" is selected (see screenshot below), this scales the whole image with all layers (on a side note, the text will be rasterized (but still editable)).