Hi @jnsdebraekeleer,
Thank you for reporting this issue. This appears to be an issue within the V8 JavaScript engine, the Montserrat typeface itself, or perhaps the glyphs Montserrat assigns within Adobe products.
E.g. if I run "(12345).toLocaleString("de-CH")" in the JS Console of Chrome, the return value is '12’345', using the curved single-quote for the thousands-separator rather than the apostrophe. Copying that string into AE or Illustrator also will continue to use the curved single-quot
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