Inserting a link shows a popup. Now I want to “i18n” this popup, too.
The web component does has values on the i18n object to allow you to customize the dialog where the link can be inserted, but for some reason that went unnoticed on the Flow component. I created [an issue to track this]
(https://github.com/vaadin/vaadin-rich-text-editor-flow/issues/97).
Meanwhile, I believe you cold workaround this by trying to set the properties missing directly to the RTE web component from Flow with: