When I use the messages.app, messages I type are automagically corrected/replaced. How can I enable this feature across many more apps like Chrome for example?
The system-wide spell-ckecker is accessed through System Prefs > Keyboard > Text... top right, 'Correct spelling automatically'...
but I'm not sure Chrome doesn't just ignore it, it does most other things set system-wide.
If you look in the Edit menu in Safari, for instance, you'll see "Spelling and Grammar" & also "Substitutions"
Chrome only has part of the Spelling and Grammar menu, & Substitutions is missing entirely.
So, I think the TL:DR is Chrome can't/won't do this.