We've recently made a change to how maps work.
Starting from Pine Forest 2, there is a 50% chance that the map will be mirrored, meaning that the map will basically be reversed. This also works for the shootout mechanic and lucky shot.
If you are playing in the tier 1 maps, you will not have this mirrored functionality active.
This is not an error, this was an intended change to overhaul a little bit how the maps are played, something that will require players to adjust their tactics. It also allows for a more exciting experience, because there is an extra unknown factor prior to starting the match.
We hope you enjoy this new feature!