Slightly Odd behaviour when importing a midi file to empty song

1- Have a blank song
2- drag in a short midi file
3- Pattern 0 becomes pattern 1
4- press clone pattern in sequencer, you get pattern 0 back again with a pattern 1 following

Expected behaviour would be pattern 0 is retained at step 3?

Also if you start with 2 empty patterns, you end up with this in the sequencer:

2 blank

Test midi file:

simple.mid (88 Bytes)