Bug with NFC fields

[gefaila]

We have NFC tags coded with an Appsheet URL that creates a new record, and fills the "NFC" field with a unique serial number.

The NFC tag is coded with the following URL

https://www.appsheet.com/start/6795d7f6-69ee-4f8b-97f3-b84d4af907be#table=Deceased&page=form&default... 
This works perfectly on my Android phone.
It starts the App, opens a new record, and fills the NFC field with the contents "LBBC_123123"

If I save it all is well, the record is created correctly....

Here's the BUG....

If I now click on the (+) button to add another field, the NFC field is *MISSING*

I've tried this with different tables, different NFC settings (visibility, require, edit, etc).
Nothing works.

However, if you close Appsheet using the Android OS ....

and restart the App, the NFC field comes back!

Surely that's a bug.
It's going to confuse the hell out of our users (if we ever go for Appsheet)