although the algolia search engine treats search terms without case sensitivity, I noticed it doesn’t deal with the character ς correctly. The upper case of the letter ς is Σ, which is also the upper case of the character σ.
To sum up:
small case: σ -> upper case: Σ (is case insensitive in algolia: good)
small case: ς -> upper case: Σ (is not case insensitive: bad)
I hope this is the right place to report this
Here is an example:
Searching for “ορφεασ”, finds "ΟΡΦΕΑΣ"
But searching for “ορφεας”, won’t find “ΟΡΦΕΑΣ” but only “ΟΡΦΕΑς”