When I use /testfor (both in a command block and in chat) and I use XYZ coordinates with it, it completely ignores the coordinates used, but still has an output.

For example, my current coordinates are 1401 4 294.
When I use this command: "/testfor @p[x=1401,y=4,z=294]" Of course, it outputs "Found pcman449"

However, when I use this command: "/testfor @p[x=1399,y=4,z=292]" It still outputs "Found pcman449"

Usually, when I use the command incorrectly [@p[ggaudjngo] it outputs "The entity UUID provided is in an invalid format", so it knows that [x=1399,y=4,z=292] is used correctly, but completely ignores it.

I also tried using "testfor @p[1399,4,292]" but it still outputs "Found pcman449" even though those are not my actual coordinates.

The same thing happens with @r and @a.

I tried doing the same thing using entities and @e instead, but it says that it found EVERY entity, even though none of them are in the coordinates used. The same thing happens if any of them are in those coordinates.