Seems the Pages Builder three column layout (and perhaps others, didn't check) isn't equally sized, leading to misalignment of content blocks even though they contain the same amount of text (attached image 1).
Left and right columns have inner margin = 10px, outer margin = 0px (attached images 2-3, respectively) while the middle column has inner margin = 10px and outer margin = 10px (attached image 4), when it should be inner margin = 5px, outer margin = 5px (attached image 5).
This forces the middle column to be 10px narrower, causing content misalignment.