Incorrect canvas size in browser

I am seeing this issue when running the code in this repo verbatim with "trunk serve". Effectively, the UI does not appear to be rendering correctly in the browser, and I tested in both Firefox and Chromium. It looks like the UI "zooms in" immediately on load; it renders much too large for a fraction of a second and then disappears. Opening the developer console in Chrome doesn't show any useful log entries, but mousing over the canvas reports the canvas size as 22369600 x 22369600. Similarly, opening the developer console in Firefox reveals log entries about very large requested sizes. I also rolled the repo back to 0.29 and 0.28 and got the same result.

Firefox:


Chromium: