I created https://dev.gnupg.org/source/libgcrypt/history/gniibe%252Ft7490/
The commit rC6dffd105e2e2 works for me.
It is a bit of exponent at time Montgomery exponentiation.
I don't put an optimization for the reduction as I don't know if it's OK for patent-wise (looks like expired, though).

If you encounter real world certificates with these parameters we can bump up the priority.

Why do we need a word list if we are a password storage tool?

In contrast to Gpg4win 4.4 in VSD 3.3.0 dragging a plain file onto Kleopatra will return an error. Decryption and importing certificates works, though.

There is a new report where mails are not shown with the following settings:

HKCU\Software\Microsoft\Office\16.0\Outlook\Options\Mail:ReadAsPlain
  ->0<-
HKCU\Software\Policies\Microsoft\Office\16.0\Outlook\Options\Mail:ReadAsPlain
  ->1<-