I haven't seen that bug, but I'm not exactly taking bug reports :P  If you didn't get scoring for a row, idk what coulda caused that since clearing and scoring happen in the same function sequence.

That's fair, but I wasn't going to use my organizational code for a personal game jam submission.  And it's not z-fighting, it's artifacts of UE5 lighting of 3D objects with reflections, emissions, and a static-orthographic camera.  Tech debt I didn't bother to solve.  

I originally wanted the scale to move in one row increments rather than two, but because that would mean one side moving up by half a block and the other down by half a block (to combine into a one block increment shift), I found that meant revisiting the entirety of the math related to block input movement, drop, collision checks, line clears, to work from full block increments to half-block increments, and while I could have theoretically solved that with more time (I only did this in a few hours while my toddler slept Sunday and Monday), I abandoned that quickly just to keep the math simple and chugging towards a submittable product.