Accented characters are replaced with an underscore

I was wondering why google is not indexing my site properly and it turns out that anything with an accent has been broken up into two words by Elements, eg. my surname (Sébire)

adam_se_bire_-iceberg_care.jpg

It should just replace accented letters with a simple, unaccented letters so as not to break all our search results for those of us living outside the anglosphere.