If I check the checkbox and enter a value in the textbox and then I click "Cancel", which is a reset button, the checkbox becomes unchecked, and the value of the textbox becomes empty.
Yet, when I reactivate the overlay:
The .Disabler checkbox is unchecked, so you would expect that the textbox would have the disabled attribute and the disabled class, but it doesn't. It's only really a subtle difference and clicking into the non-disabled checkbox does indeed automatically check the checkbox again, but overall I would be expecting different behaviour, e.g. if the form fields are reset, then the .Disabler should kick back in too.