For whatever reason, the handle of the ceramic knife extended a few millimeters below the blade heel:
Now it doesn’t:
Which makes it much more usable for the kind of chopping I do around here: the blade hits the cutting board squarely, producing chunks of veggies along its entire length.
A coarse file removed most of the stub, followed with a fine file and a little sandpaper action to round the edges.
Amazingly enough, none of that fussing around touched the blade, nor did I gash myself!