Why do spellings change at the end of a line?
Most likely: -m is a line-final form of -in / -nAhead on the evidence, not yet confirmed. It needs two reviews to be accepted.
Answers 2
What would settle it
- Model and remove the layout layer: normalise line-final forms (-m to -in/-n, F-111) and other line-conditioned variants, then rerun the battery and solvers on the normalised text.