web-vitals.js blocked by ad blocker breaks when performance bar is enabled using Vite

When you use GDK with vite.enabled = true and you have the performance bar enabled, the page does not load:

So you'll see spinners and content areas being empty.

This is due to Vite sending web-vitals.js as a separate file (in contrary to webpack, which sends a bunch of chunk.js files), and the Ad Blocker (uBlock Origin) blocks that file. Because the performance bar loads early, all the following code does not get executed.

Workaround

Disable your adblocker for gdk.test (or wherever your GDK is available at).