EXC_BAD_ACCESS when editing a text field on iPhone 5, what's wrong?

Question

iOS

When testing on an iPhone 5 device, while editing a text field (UITextField), the application crashes with EXC_BAD_ACCESS code 1. UITextField is completely native, without a delegate implementation, that is, not a single line of my code regarding this UITextField. In the stack, the last call to [UIView subviews], including NSZombie does not help - nothing is displayed in the log. The problem occurs only when testing on iPhone 5, on editable text fields, usually when entering the 3rd-4th character.
PS Runtime did not disturb.

Answer 1

There is a problem somewhere with the textfield, maybe because it is red, but I do not paint it in this color, what am I doing wrong?

Answer 2

It is unlikely that someone will answer you without a sample of your code. Submit a project consisting only of this issue to GitHub