I was mindlessly walking back in forth until I walked through a bush that didn't have any indication that it would take me to another placesort of confused.

Hi, this actually is intentional. There are multiple hidden locations on the Spring Festival Map and they are intended to be there and to be hard to find.

Here's the Spring Fest Map with all the hidden locations visible:
https://drive.google.com/file/d/1cCfvtlc_5v0wahmBi3jRwmMIfQ5q6JcS/view?pli=1

The hidden area right outside the caves(In the bushes), and the hidden area in the boss temple(Through the wall), are no longer accessible, but the rest of the hidden areas are still open. And the loot in them respawns every 12-24 hours(Can't remember if it's 12 or 24, so putting both).

I hope this explanation, and the map helps. ^-^

Thank you!