Placeholder text in Planeswalker Arena

Delnai

I own neither Liliana 2 nor Garruk 2, the planeswalkers for this weekend's Planeswalker Arena event. When I try to join Garruk's node with an event deck I don't have, I get a reasonable looking error screen. When I try to join Liliana's node with an event deck I don't have, I get some weird placeholder text. See linked screenshots. 

https://imgur.com/a/49r6Q

PS Although, strangely enough, the fact that there's only a single "cancel" button in Lili'e dialogue box makes more sense than having both "cancel" and "confirm" in Garruk's...