Translations within the {{ nocache }} tag are not correctly translated when using Full Static Caching

[jlmmns]

I run a multi-site configuration:

'sites' => [

    'nl' => [
        'name' => "Nederlands",
        'locale' => 'nl_BE',
        'url' => env('APP_URL'),
    ],

    'en' => [
        'name' => "English",
        'locale' => 'en_US',
        'url' => env('APP_URL') . '/en',
    ],

],

Full Static Caching seems to be working, except for one thing:

My contact form uses the {{ trans }} tag for translated labels.
I've placed the entire form within the {{ nocache }} tag, as advised per the docs.
But the cached contact page only displays the labels in English.

<label class="form-label">{{ trans:labels.name }}</label>

When explicitly specifying the locale, the translations remain in the language of the site that got cached first.

<label class="form-label">{{ trans:labels.name locale="{site:locale}" }}</label>

Without the use of {{ nocache }}, the translations are cached correctly.
So there seems to be an issue with {{ nocache }} and the current locale?

Any idea on how to get translations working within {{ nocache }}?

Is anybody else able to replicate this behavior?