Does anyone know if base64 flow function has been fixed for android?

I need to be able to authenticate to a separate system than my in app auth system in order to perform certain tasks, and the system requires I send an email/password encoded as base64 string in an auth header. Does anyone know if the bug which made this flow function not work on android has been fixed, and if so, which runtime version it is fixed on?

Here is the tracker for the bug: