All three sat in the middle of a box the width of the widest of them, so left, centred and right were the same picture. `text_align` puts the glyphs somewhere in the box the text is given, and a text that reports the width of its own glyphs is given exactly that -- there is nowhere for it to sit. Declaring `rel(1.0)` on each hands it the row instead. (Bryan, 2026-09-17.)