Nonce gets removed for island when `csp: true`

[intaek-h]

I'm implementing CSP for a page that has an island component.
If I set csp: true for that page, the nonce for the island's script tag gets removed.

<script id="__FRSH_STATE_e2edbfed-24ab-45b8-a5a1-2dee7f158563" type="application/json" nonce="">{"v":[[{"postId":83,"initialVoteCount":1,"hasVoted":true}],[]]}</script>

Because of that, I see console errors saying the script is blocked.

Refused to load the script 'http://localhost:8000/_frsh/js/f175c03a9a27eda73b62be15536761b89088e2ea/main.js' because it violates the following Content Security Policy directive: "script-src 'nonce-a509e33ef6cb48288be0d7b103a82efb'". Note that 'script-src-elem' was not explicitly set, so 'script-src' is used as a fallback.

If I turn it off,

<script id="__FRSH_STATE_80b83e7d-a15b-42eb-bac3-0f0581fc5e79" type="application/json" nonce="7fdd74f6cce746afb23fd4e4e7da7c9c">{"v":[[{"postId":83,"initialVoteCount":1,"hasVoted":true}],[]]}</script>

Nonce is alive.

Am I missing something?
I followed the docs for implementing CSP with useCSP util.