Rising Tensions event - Standard change?

I just noticed that today’s Rising Tensions event allows less cards to play with (from Ravnica and up only). I haven’t seen any information regarding this (important) change. Is this a bug or is this change intended?

It’s every event that uses standard. Seems they by accident rotated few sets out. Also in crafting btw these are moved to legacy

What’s weird is that i am playing against decks with excluded cards. How does that happen? My hypothesis is that people joined with decks that had cards that were then rotated out after? /shrug

Yeah, they changed mid event and all decks entered before and not updated since are still containing these other sets.

Do these folks work on Fridays? I’m a little surprised by the complete lack of response from D3 & Oktagon. At least give us a “We’re aware of the problem and are working to fix it” kind of statement. If indeed that it is the case.