[2023] Riven Mods when unveiled by a riven cipher provides a broken Riven of its category

Thank you for the report, I've verified that this is indeed a problem. It has been entered into our bug tracking database.

Support can fix this for you, or if you would prefer not to wait, it looks like you can recover the mod by using Reroll for 900 Kuva and choosing the option that looks like a valid roll (the other will just generate an error).