0-cost cards created by Sonya Waterdancer cannot be played

Bug Report
1

Created two 0-cost cards with Sonya Waterdancer, but for some reason they’re not playable, as shown in this screenshot:
https://imgur.com/a/JB6g7jO

Chain of events looked something like this:

  • A Golden Kobold generated two Sonya Waterdancer.
  • Played first Sonya.
  • Played a mini Sandbox Scoundrel.
  • Played second Sonya.

The non-mini Sandbox Scoundrel may have been generated by Tolin’s Goblet but I can’t say for sure.