Sprite size shrinks when preview is launched

It’s me…again…

My player sprite is 366x495 on my workspace/scene editor. This is the size I want it to be and the camera is fixed on this sprite. However, when I launch a preview my sprite’s size drastically changes to 40x70. There’s nothing on the events editor that even mentions a size change. Here’s my proof:

Are you 100% sure you haven’t inadvertently set a custom size on the instances properties panel?

I have but it’s set as 366x495.

The object doesn’t have an old placeholder animation that you’ve forgotten about, and you don’t have any events that alter the scale?