Hi,

A pdf form with a button with action to submit form to e-mail address was working in 32-bit version for more than a year. After installing 64-bit version, it gives the message " One of the specified recipients is not resolvable" regardless the e-mail address.

64-bit version is 2021.007.20099, installed on Windows 10.

So button action is "on focus submit a form", url "mailto:address@site.com" (no spaces)

It is only one e-mail address which works in 32-bit or in Android version but no longer in 64-bit.

I tried also with "mailto:nobody@adobe.com", addresses from yahoo or gmail - nothing changes.

Tried with <>, '', "", added spaces, //, nothing changes.

If I leave empty "mailto:" it opens correctly the e-mail client but I have to type the address by myself, which I would like to avoid.

I attached sample of the reduced file, only for testing the submit action.