In development mode, index.css is loaded as hot update multiple times

[nevil2]

Issue is only in development mode.
Rather than load index.css once, it is loaded as a hot update for every page and component when one hovers on the link to that page.
Makes initial experience very jerky.
Did not use to do this.

import '../index.css' is in script section of +layout.svelte in routes folder.

Using:
Vite 6.0.3
tailwindcss 4.0.0-beta.7
@tailwindcss/vite 4.0.0-beta.7

Is this a bug, or
Am I doing something wrong, or
Is this an undesirable feature of SvelteKit

[nevil2]

Guess the cause is the same issue as #10905.

But in my case, I am not modifying index.css, but is still hot reloaded multiple times, causing weird transitory visual effects.