[BUG] Search for "–" known as "en dash" doesn't find the corresponding result

[Kim-Vallee]

If one searches for a document with "–" it appears the search doesn't provide any result. It is particularly bothering for research document where "–" appears all the time for citations and reverse citations' lookup.

Exemple: search for "[4–8]" would not work in the following sentence, even if copied and pasted from that very same sentence:
All noncontextual models satisfy this inequality, while the quantum predictions for any state violate it [4–8].

[ahrm]

Does this happen in every document or in a specific document? I can't reproduce the issue, if it happens in a specific document, please link it here.

[Kim-Vallee]

It surely doesn't happen for every document (I just checked). I can't find again the original document but for instance in the following one Thermodynamics and the structure of quantum theory any search for these kind of dash doesn't work. For instance "[66–69]" won't return anything.