No, even if you fix it... it will went wrong on the moment you click enter to save. Some mobile keyboards are just dumb enough to fight against users even they explicitly change it back. Some will have a option to disable it, but some probably won't.

No. What happens is people fail to login several times in a row and complain about it. This approach changes the security of a password basically not at all while reducing the number of people who become aggravated by not being able to login because they don't realize their capslock is on.