FronValue not working when value is a custom object

Hello,
I have
LieuxDeStationnement : SmartEnum
so the "value" is of type LieuDeStationnementKey.

LieuDeStationnementKey implements IEquatable and IComparable with also operators (== != < >)

I tried this

try
{
LieuDeStationnementKey ley1 = LieuxDeStationnement.Peseux.Value; // this is {"NE",6421}
LieuxDeStationnement lieu1 = LieuxDeStationnement.FromValue(ley1); // this functions ok.
LieuDeStationnementKey lieuKey = OtherObject.LieuDeStationnementKey; // this is {"NE",6421}
LieuxDeStationnement lieu = LieuxDeStationnement.FromValue(lieuKey); // this give NotFound
}
catch (Exception e)
{
throw;
}

I joind the zip with the two classes.
ALso I see that FromValue doesn't call any of the IEquatable, IComparable methods ... so I don't understand how it works.

[LieuDeStationnementKey.zip](https://github.com/ardalis/SmartEnum/files/4953472/LieuDeStationnementKey.zip)

Start by inspecting the two classes in the attached LieuDeStationnementKey.zip and tracing the FromValue entry point. Reproduce the difference between the value from LieuxDeStationnement.Peseux and OtherObject.LieuDeStationnementKey, then determine how custom-object equality is expected to affect the lookup and capture the behavior in a regression test.

Written by the indexing model from the issue text.