This is an odd one. I was typing on an apple "smart keyboard" connected to an iPad Pro. "Notes" REALLY wants to capitalize the first letter of each line, and "Mail" REALLY wants to capitalize any letter after you type a ":" character.
When I'm using the on-screen keyboard it is easy to see that the 'Shift' button is engaged, and press it to disengage it. However, for the life of me, I could not get the shift to disengage while I had the apple keyboard attached to the iPad Pro! I had to physically disconnect it in order to bring up the on-screen keyboard where I could then disengage the 'Shift' button.
Does anyone know a way to do this without disconnecting the physical keyboard?