Picker in Modal within Scopes don´t show special characters

If I define any words in Scopes within Modal window contain Czech-language specific letters, I see letter mismatch:

try these letters: ě š č ř ž ý á í é ú ů or CAPITALS: Ě Š Č Ř Ž Ý Á Í É Ú Ů

maybe this picker dont use UTF-8 coding

On figure You see the word Příběhy ( in the Czech localization interface) appears mismatched

This happens all over the site. Version Decidim 0.23.1