Yep, for that many labels, you probably want to use a dropdown – or make several passes over your data with fewer labels. Prodigy’s UI is optimised for fast annotation, so we’d typically discourage framing an annotation problem in a way that’d require the annotator to choose from 80 labels.
Update: Just released v1.10.5, which introduces a new label_style setting (alias for ner_manual_label_style) so it's clearer that it's supported by the ner_manual, image_manual and relations UI