Open Z102 in English. In the "Try this function" panel, look at labels -> text -> Item 1. The "Enter text" placeholder there is untranslatable.

If I look at the same page in Hebrew, I still see "Enter text".

I might be wrong, but I suspect that this is hard-coded in resources/ext.wikilambda.edit/components/default-view-types/ZMonolingualString.vue:

<cdx-info-chip
        ref="chipComponent"
        class="ext-wikilambda-lang-chip"
        :class="{ 'ext-wikilambda-lang-chip__empty': hasEmptyLang }"
>
        {{ langIso.toUpperCase() }}
</cdx-info-chip>
<cdx-text-input
        v-model="text"
        placeholder="Enter text"
>
</cdx-text-input>