There are untranslated strings on Project default board for all the projects created from template (screens attached). This issue is global and is present for all the languages.

It seems that the strings are hardcoded in jira-cloud/jira-components/jira-plugins/jira-project-templates-plugin/jira-core-project-templates/src/main/resources/images/svg .

The strings are missing in Transifex and appear in English despite of the provisioning language is different. In the attachments you can see the English string in the Jira instance provisioned in Japanese for a google account with Russian default settings.