Is there anyway to make the Viewer bigger when working on a project with Fixed Sizing?
In Designer view, there is an option to adjust the device size (Phone, Tablet, Monitor) when the project uses Responsive Sizing.

But, as soon as I change a project's properties to Fixed Sizing, the device size option goes away and I am stuck with a small Viewer.
The project I am working on with my students has a large central Canvas (250x250px). After adding 1 or 2 more components, we run out of design space. What we are adding will all fit on the screen when placed into Arrangements, but it is challenging to do the layout because components often are too tall for the small app view.
We can set the project to Responsive to do the development then back to Fixed to test, but that is not ideal. I'm trying to model iterative and incremental design, so we do UI development a little at a time as our app's feature set grows.