Cursor position jumps when I enter notes

[vince94]

I was in the middle of making a song last night, and my cursor started jumping to the bottom of the pattern whenever I entered a new note. I restarted the program, but it's still happening, even in blank songs.
Nothing happens when editing the instrument or effects columns, though.
Here's a screen recording - https://youtu.be/xsnvsj4i9Ps
Did I inadvertantly change a setting? What do you think is causing this?

[Rakib]

Edit step is 64, change that to 1.

[vince94]

Woah, thanks! 

[Saga Musix]

Since this is pretty much the most-asked question on this forum over the years, and since I don't see why Olivier made the spin buttons for the edit spacing control wrap around, I think I need to revise this behaviour so that pressing the spin down button when the value is 0 no longer wraps it around to 64.

[Toast]

Edit step is 64, change that to 1.

Yeah. I love doing this too, although I actually keep mine on 0 in case I entered the wrong note.