It was weeks ago when my friend and I got in our private minecraft server where we just play normally like getting golds silver and diamonds and allat. However, while having fun we encountered countless questionable things for example, random stones/ sand pyramids, many leafless trees ( it appears to be following in a group of trees and besides that there are also redstone torches on each groups of these trees.), the groups of trees was built based on a following pathway which leads to nowhere, besides, TONS of random animals mobs spawned, while being separated from different types of animals. Following, redstone torches didn’t only appears on those trees but in caves that we went to. It was just there, a single torch of redstone. Next, randomized cave sounds while we weren’t near any caves.
Most importantly, when I was in the server alone, I encountered an entity that was fully invisible, with props in hands and under its legs ( it appeared with two dark bluish stones/ coals and some type of paper in both hands. ), I was at our old house where we built on the sea and it was there, right in front of my eyes. It turned to me, stared at me for a while and disappeared in thin air. Honestly to say, I have encountered this entity one time before, however, i thought it was just a glitch so I ignored it. ( it was RIGHT behind me, I even walked in it..). Not only me but my friend saw it too, however, she was the one who encountered something looks exactly like NULL. A blackish entity with no face at all.
Another time when I encountered the invisible entity was when I was at our house on a mountain. My dogs growls whenever these entities are near, so because of that, whenever my dogs growls I just know it’s around there somewhere.
To sum up, there are, in total two entities in our server.
This is not fully detailed yet, there are still way more questionable stuffs going on in our server that I can’t really list out everything that happened.
Regardless, can someone gives advices or gives us explanations on what on earth is happening here?
Edit: Entity spotted, the picture was taken today while my friend was in the server, exploring nether alone, streaming to me on Discord.