I have a couple multileaders that are "possessed"!!!
In the attached drawing, there are two objects that look like just blocks. They are actually multileaders similar to EP-0 but without any leaders. (FWIW, they are used as "finish callouts" waiting for leaders to be added later.)
First, use the COPY command on EP-2. Note two things: you don't see it "drag" as it's being copied (DRAGMODE is Auto) and it copies twice the distance as your pick points!
(Similarly w the MOVE command.)
It gets weirder...
If you "add leaders" to "EP-1", you can recreate the look of EP-0 just fine. Try adding leader to "EP-2". Note the strange leader behavior.
And it gets weirder...
Now, UNDO the leader you just added to EP-2. The entire mulileader disappears, including the block content. But, if you do a select all, it select "6 objects", indicating that EP-2 is still in the drawing!
"You've just crossed over into the Twilight Zone"....
Would love to hear your thoughts.