The Editor's distance snap seems to be wonky at times, probably due to some kind of rounding error. It sometimes places notes at different ranges depending on the direction from the previous note. To see what I mean, set the BPM to 189.000 and the grid level to 2. Slider velocity is 1.20 and distance spacing is 1.0. (I think that's all the details needed to recreate this...)
For hitcircles on white ticks (whole beats away, timewise), if a beat is placed above or to the left of the previous one, there will be a 4-space gap between them. If it's below or to the right, the gap is only 3 spaces.
For hitcircles on white ticks (whole beats away, timewise), if a beat is placed above or to the left of the previous one, there will be a 4-space gap between them. If it's below or to the right, the gap is only 3 spaces.