The 3189 behavior.
Have a text file like this
…
A
B
C
D
…
(1) select 4 lines using alt+ctrl+down (| simulates cursor)
|A
|B
|C
|D
(2) press ctrl+d to duplicate lines
A
|A
|B
|B
|C
C
D
D
Lines are interleaved as expected, but cursor position is not interleaved!
Expected cursor behaviour
A
|A
B
|B
C
|C
D
|D
Thanks
Fabrizio