almost no guardians spawning

update 1.2.6 installed. i had previously built a guardian farm. after the update no guardians spawned. switched to peaceful and then back. to normal. the guardians resumed spawning, but at a lesser amount. gradually it reduced to 1 guardian every once in a while and no more. traveled to another monument site and there was just 1 guardian . pretty sure i sawsome despawn as i was swimming down to the monument. thanks for reading and your hard work on this game.