The atlas was generated at sampling 159 with padding 4 (~40:1 instead
of the required ~10:1), so at small render sizes the SDF edge smoothing
could never reach zero alpha at the glyph quad border - every character
rendered a faint translucent rectangle. Regenerated in place (same
asset/GUID/material): sampling 85 / padding 8, gradient scale 9, full
Latin-1 charset (native umlauts instead of fallback mixing), kerning
pairs rebuilt. LiberationSans fallback asset picks up the current
serialization format from the re-save.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>