This would be an example. If I was typing a sentence and included an abbreviation for a week day like Wed. The next letter (the T in previous "the") is automatically capitalized. Shift and the key will not reverse it. Caps Lock does not reverse it. The only workaround I have found is to type another word first and then after getting a word or two past deleting it. Even if you go back and just try to change the first letter or the word the auto-caps persists. E.g. Using above example If I was typing a sentence and included an abbreviation for a week day like Wed. This the next letter...... Then go back and delete "This". (You don't need a whole word, just trying to make it obvious) There has to be an easier way? Have not tested this in Word or Pages or other apps but I've noticed the behaviour on a few forums I participate in. --- Post Merged, Apr 13, 2016 --- ETA. Just tried in Word. The auto-cap behaviour is the same but if you delete the capitalized letter and retype it you can get it in lowercase.