@Bettina-Löffler I tried this, but Fae Land Island is still resetting if I switch to Android and back. Everything else is the same. For instance, I used Facebook exclusively for the past day or so and got the Scout Dragon egg. As a test, I made sure to visit a friend's islands and return on Facebook before logging in on Android for a bit, then logging back in on Facebook. My Scout Dragon egg was still sitting in my hatchery, however the Fae Land Island maze had reset and instead of the Scout Dragon path being cleared, the dragon was sitting in its cage back at the start.
I'm not sure if this is related, but are the limited time islands supposed to occur at the same time on Facebook and Android? Right now I have Ragnarok Island on Android and Fae Land Island on Facebook. (Ragnarok doesn't reset when switching but Fae Land does.) None of the announcement posts mention anything about separate schedules so I'm sort of wondering if this isn't part of my issue.