The secret door mechanisms of the ancient cities do not work since the redstone drop is poorly positioned one block away.
In the attached image the redstone drop must go between the redstone torch and the other redstone drop to open and close the gates. Since there is this cutting the redstone system and the doors do not work as they should.
Seed bedrock: -730362160
It happens in this type of structure both in new worlds and old worlds.
Please do not duplicate your own reports (MCPE-157057)