Funny, did not understand how up play on iPad (clicking only let the blocks go down). I think there are some small bugs in the code, see image (several rows ful

Funny, did not understand how up play on iPad (clicking only let the blocks go down). I think there are some small bugs in the code, see image (several rows full but not clearing, and there is a block on row 4+5 that overlaps with the full(!) row 4 and the (non-full) row 5. Link: https://www.dropbox.com/s/cm1qbow9h7fvsmw/20220507_093125.jpg?dl=0 https://www.dropbox.com/s/cm1qbow9h7fvsmw/20220507_093125.jp...