Pixel brushes are hard

Hi, I’m trying to make a pixel brush in 2.82.
Anti-aliasing turned off, brush size is 1px, texture is square, fallow is also square, but pressing mouse once results in this, rather than a regular pixel:
these were just 4 clicks

Any suggestions?

Setting the falloff like this works for me:
SteppedFalloff

alas

what version are you on?

I’m using 2.82a.
also of note is that I did not use a texture, just the default round brush.