Weird activty when I copy more than 2 cues

When I copy say "cue 1+2 copy to 3" in a list, It performs the copy, but you only see cue 3...., and you can not arrow down, or scroll down.

If you delete cue 3, then cue 4 shows up, I then have to click the "undo", and then I have a list I can scroll down cues 1-4

Am I doing something wrong?
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