If you are using a StrField, or a TextField with a Keyword tokenizer then it's very possible your indexed terms will include white space.
But the links created by the Schema Browser UI screen to serach for a term in the "Top Terms" list assume that just prepending hte term with the fieldname (ie: $fieldname + ":" $term) will be valid – and instead they don't match the correct term.
Load the example/films data into a "films" collection, and then load the Schema Browser page for the "genre" field...
The "Top Terms" list includes terms such as Rommance Film but clicking on this term takes you to this URL...
...which is just doing a search for "genre:Romance" OR "Film" (in the default field)
Instead it should link to...