Chord mode creating blank columns?

What would cause chord mode to create empty columns in between the notes? Or has it always done that I just now noticed it?

edit: It’s my midi controller apparently. I don’t know why but all of a sudden this one controller is doing strange things. Recording duplicate same line notes in chord mode (duplicate note offs too), skipping an extra line above step length (ex: step length set to 1, steps 2, but only with this controller) and some other weird happenings. I just now thought to try my other controllers and sure enough that’s what it is. I don’t know how to fix it but at least I have a starting point.

edit2: Oh LOL I fixed it. Apparently I had the same controller selected twice under 2 different names in the preferences, so it was controller A and D, but under 2 different names.