Fixed.
Unfortunatly, you need to delete and recreate the enumeration field to avoid this problem, because the label value is still present in the properties of the table field.
I explain, this is an error coming from the fact that the sub list of values (in the properties), was setting 'label' and 'value' such as properties datas. It is not anymore doing this. But, because of successive fallbacks, then the default label is took from there.
You can set up a label value, but if you remove it, then the fallback occurs. There is no way to delete individually the parameter, so you should recreate it.
For the enums wich have not been opened, it might be fine.
This can be annoying, but now it is fixed for further enums created.
Thank you for the good catch.