MDL 4.5.2, auth_oidc 4.5.2 Custom claim not working

[nbartley]

Good day,

MDL 4.5.2, Plugin 4.5.2

On the "Binding Username Claims" page,

Selecting custom from the drop down box, the bottom box becomes editable.

Filling in text, and pushing saves, results in the same page, but instead of the text, it says "custom". I've repeated this a few times and it seems repeatable.