UITextField bindings not working on iOS 12

[defagos]

With iOS 12 (at least with beta 4), UITextField bindings do not work anymore.

[defagos]

The issue is related to the fact that UITextField now implements -didMoveToWindow without calling the super method implementation. Since bindings are set at the UIView level by swizzling this method, they therefore break for UITextField.

[defagos]

Fixed in commit 369e3e2. I won't merge the fix until iOS 12 is released, though, since this might change with the final version.