Just upgraded our version from 2022.1.119 to 2022.2.802.
A user just called us that they can't use our maskedtextboxes anymore.
After further inspection it seems the control is now broken when using client side validation, more specifically the maxlength one.
When the length of the mask >= the max length (from the validation), then you can only replace characters. Normal key inputs don't work anymore.
If you look at the example, when you focus the inputfield, you can no longer type in it.
If you were to increase the maxlength validation by one, then the maskedtextbox will work as expected again.