I have several radio buttons set up in my custom form. One, for example, is for "Material Type".

This allows the user to select a material type, and the "x" icon is meant to reset the radio button selection, returning it to a blank state.
When creating a new item with the new form (same format), this works fine, but with the edit form, I run into a major problem. The value in the list item is not carried over, and the field shows as blank in the edit form.
Here is a screenshot of the field structure in Power Apps:

I have the Update property of the field set to the radio button: {Value: 'Material Type_Value_Edit'.Selected.Value}
The OnSelect property of the "x" icon is Reset('Material Type_Value_Edit')
The Default property of the radio button itself is blank
A workaround to this I found was to change the Default property of the radio button to ThisItem.'Material Type'.Value. Doing this, the edit form did pull in the correct value, but it was no longer possible to use the "x" as I intended because the radio button would simply reset to its original value instead of going blank.
I have searched and searched and cannot find anybody asking about the same issue that I am experiencing. I need the radio button to hold its value when I initialize the edit form but also reset to blank when I use the cancel icon.