mobs, specifically piglins, creepers and skeletons are invisible and are causing damage without being visible to the eye nor can any damage be done to them.
When using water buckets sometimes it glitches and when going to re-place the water the water will disappear and act as if the water was never picked up.
Comments 2
The water bucket thing should be fixed in 1.17+ MC-12363
Invisible mobs has been caused by Optifine in the past, if you are using Optifine try updating it.
ive had this problem as well it just kinna eventually stops