Hello
1. There are three voting elements there: Vote (Like), Reaction and Vote (Up/Down). For now Reaction is used by default.

2. Voting elements use so-called 'objects' which are needed to generate the whole voting element including Icon, TItle, Voting popup and so on. Unfortunately, in case of voting objects there is no way to add/remove title via Studio -> Navigation builder.

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Best Regards
Anton