Astro islands not reactive when used within slots that are passed props

[salami-art]

What version of astro are you using?

2.10.12

Are you using an SSR adapter? If so, which one?

Node

What package manager are you using?

pnpm

What operating system are you using?

Mac

What browser are you using?

Chrome

Describe the Bug

As you can see in the repro link, when adding an astro island within a slot that is passed props ( i.e. <WithSlot>{(foo) => <Demo client:load />}</WithSlot>), the client scripts responsible for making the island reactive ( in my case, svelte.js ) are not downloaded and the island is not "reactive" ( it keeps whatever is rendered on the server and cannot become reactive on the client ).

The issue only occurs when the island within the slot is the only island on the page, if another instance of the same island is added outside the slot, the one within the slot will become reactive as well, because islands outside the slot will trigger the client scripts to be downloaded.

What's the expected result?

I expect astro islands to work normally inside slots, even if I'm not adding more islands outside the slots

Link to Minimal Reproducible Example

https://stackblitz.com/edit/github-w2ovbf-6tozmd?file=src%2Fpages%2Findex.astro,src%2Fcomponents%2FDemo.svelte

Participation

• I am willing to submit a pull request for this issue.