The two earlier reported issues have been fixed and I have attached an example to illustrate this.
You can run the sample enter some text and press the keyboard's Enter or Space key to close the input prompt. If you press Enter the DialogResult will be OK and if you press space, the result will be Cancel.
You can open another input prompt and you shouldn't get any exceptions.
If you have another scenario where the reported exception occurs, please let us know what are the steps to reproduce it.
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